And based on the country's oil revenues and reports of investments around the world, El-Kikhia said he estimates an additional $60 billion has yet to be tracked in other countries, including Angola, South Africa, Uganda, and other places in Asia and Latin America.
The Economist Intelligence Unit estimates Libya's oil export revenue in 2010 was $45 billion. The country's gross domestic product that year was $90.57 billion using purchasing power parity, with a population of 6,597,960 people, according to the Central Intelligence Agency.
According to a reported cable from the U.S. State Department in January 2010, ambassador to Libya Gene Cretz wrote that Gadhafi's regime controlled $32 billion in liquid assets around the world. The U.S. State Department has not commented on any reported "leaked cables" by Wikileaks.
Global Financial Integrity, a nonprofit research firm in Washington, D.C., advocating against illicit global financial flows, said that $33 billion in Libyan money has been unaccounted for from 2001 to 2009, according to data from the World Bank and International Monetary Fund.
Monique Danziger, communications director with Global Financial Integrity, said Libya has the "spottiest" data reporting of the 162 countries that report financial figures to the IMF and World Bank.
"These are all puzzle pieces," she said. "No one can say they have a wholistic estimate. You're working with huge data gaps no matter what."
In the end, Powell said Gadhafi was an "absolutely atrocious leader" and arguably "the most eccentric leader in the world."
"Libya was stuck with the most incoherent governmental system in the world," Powell said.