No. 7: David Koch, executive vice president of Koch Industries, had a net worth of $40 billion. (Phelan M. Ebenhack / Associated Press)
Charles Koch is chairman and chief executive of Koch Industries.
No. 2: Mexican telecom mogul Carlos Slim fell to the second spot this year with a net worth of $72 billion (Yuri Cortez/AFP/Getty Images)
No. 1: Bill Gates reclaimed the top spot on Forbes’ list of richest people with a net worth of $76 billion. (Mehdi Taamallah/AFP/Getty Images )
