Former President Donald Trump and New York Attorney General Letitia James, in separate media appearances, addressed the ruling Friday evening, trading barbs while reacting to the judgment.

Speaking from his Mar-a-Lago estate in Florida, Trump said he had to pay a fine for "having built a perfect company." Accusing both James and Judge Arthur Engoron of being politically motivated, Trump denied committing any fraud and said he plans to appeal.

20:02

Trump responds to ruling: 'A crooked New State judge just ruled I need to pay a fine'

Meanwhile, in New York, James lauded the ruling as a victory for all Americans and the principles of equal justice under the law -- saying "former presidents are no exception."

"The scale and scope of Donald Trump's fraud is staggering -- and so, too, is his ego and his belief that the rules don't apply to him," she said.

James also heralded Judge Engoron's penalties as effective remedies to "ensure this fraud cannot continue."

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Letitia James delivers remarks after Trump ruling

Based on Friday's decision, former President Trump and his co-defendants will likely owe $463.9 million based on their initial fine and the prejudgment interest imposed by the court, according to a representative for the New York attorney general.

Trump himself will likely owe $453.5 million, between his $354.86 million fine and $98.6 million in interest.

The amount of interest owed by the defendants is set to increase every day they do not pay the fines.

New York Attorney General Letitia James, whose office brought the civil fraud case against Donald Trump, described the ruling as a "tremendous victory for this state, this nation, and for everyone who believes that we all must play by the same rules -- even former presidents."

“When powerful people cheat to get better loans, it comes at the expense of honest and hardworking people," James said in a statement. "Everyday Americans cannot lie to a bank to get a mortgage to buy a home, and if they did, our government would throw the book at them. There simply cannot be different rules for different people."

The former president is "finally facing accountability for his lying, cheating, and staggering fraud," she said.

In addition to the fines imposed on Donald Trump and his co-defendants, the judge's decision leaves the Trump Organization in a constrained position to continue operating their New York-based businesses.

While Judge Engoron backtracked on his September summary judgment ruling -- vacating the part of his order that canceled their business certificates -- Donald Trump and his sons are temporarily unable to lead their namesake company. Trump faces a three-year ban on serving as the leader of a New York company, and his sons face two-year bans.

An independent monitor will continue to oversee the company's finances for at least three years, and the company needs to install a director of compliance.

Regarding the combined $364 million owed by the defendants, experts who ABC News spoke with believe it is unlikely any of them foot the bill immediately; instead, they can cover the fine with a bond while they appeal.

The state's expert witness, Michiel McCarty, calculated that Donald Trump's lenders lost $168 million in potential interest between 2014 and 2023, according to a report he presented in court.

McCarty's testimony appeared to reinforce a central tenet of New York Attorney General Letitia James' case: that Trump's misrepresentations in his financial statements cost banks potential earnings from interest, even if the banks made money on the loans.

State attorney Kevin Wallace directed McCarty to a footnote in Judge Engoron's earlier summary judgment order about the concept of lost interest, in which Engoron said, "The subject loans made the banks lots of money; but the fraudulent SFCs [Statements of Financial Condition] cost the banks lots of money. The less collateral for a loan, the riskier it is, and a first principle of loan accounting is that as risk rises, so do interest rates. Thus, accurate SFCs would have allowed the lenders to make even more money than they did."

McCarty, who said he agreed with this assessment, ultimately found that banks lost a total of $168,040,168 in potential interest from loans related to four of Trump's properties in Miami, New York, Chicago, and Washington, D.C.

Trump attorney Chris Kise fiercely objected, arguing that McCarty was testifying about facts not established during the trial. During questioning, state attorneys declined to ask a Deutsche Bank executive if the bank would have still done business with Trump had they known his financial statements were inflated.

"They are not ill-gotten gains if the bank does not testify it would have done it differently," Kise said.

"I decided these were ill-gotten," the Judge Engoron replied.

Following Wallace's direct examination of McCarty, defense attorney Jesus Suarez began his cross-examination.