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.

State attorney Kevin Wallace, challenging the testimony of an expert witness for the defense, angrily argued that Trump used fraudulent means to gain access to favorable loan rates through Deutsche Bank's private wealth management division.

The exchange came during Wallace's cross-examination of defense expert Robert Unell, who disputed the state's claim that Trump's alleged misstatements cost lenders $168 million in lost interest because, Unell said, the loan rates the state used in their calculation were higher than the rates Trump was entitled to when he used a personal guarantee as a private wealth client.

"Once you are in the private bank, you are in this sort of rarified air, and you get access to these rates ... it is a flawed premise to say you have to compare it to the outside air," argued Trump attorney Chris Kise after Judge Arthur Engoron removed Unell from the courtroom so the attorneys could hash out the permissibility of Wallace's argument.

Shouting at Kise for repeatedly making lengthy objections, Wallace argued that Trump would have not qualified for the private bank rates had he not fraudulently overstated his assets.

"The court has found that Mr. Trump committed fraud," Wallace said. "To get into the private wealth group, he committed fraud."

"He lied to the private wealth group to get these loans. Therefore, we are looking at what the interest rate would have been had he not had access to the group he lied to," Wallace said of the state's calculation.

Overruling Kise's objection, Engoron said that he supported Wallace's theory.

"I think his explanation is correct," Engoron said.