The filthy rich have a new poster boy. According to the latest Forbes World's Billionaires list , Mexican telecom magnate Carlos Slim Helu is the richest man alive , with his $53.5 billion fortune proving just about enough to win him the top spot ahead of Bill Gates. Gates may have spent a substantial part of his life atop the list but this year he missed the top spot by a whisker with an estimated worth of $53 billion. He lost nip and tuck despite adding $13 billion to his fortune over the past year. This is the first time in the last 16 years that a non-American has topped the list. Larry Ellison, Sergey Brin, Larry Page, Steve Ballmer, Paul Allen and Michael Dell are some of the other tech honchos on the list.