Per Forbes:
#1 – Bill Gates Jr., $79.2 billion
#2 – Carlos Slim Helu, $77.1 billion
#3 – Warren Buffett, $72.7 billion
#4 – Amancio Ortega, $64.5 billion
#5 – Larry Ellison, $54.3 billion
#6 – Charles and David Koch, $42.9 billion each
#8 – Christy Walton, $41.7 billion
#9 – Jim Walton, $40.6 billion
#10 – Liliane Betancourt, $40.1 billion
Photo: The Koch brothers, richer than some countries