Carlos Slim Helú
Net worth: $67.8 billionCompany: Telmex, América Móvil, Grupo Carso
What? Telecommunications are IT. The fact that Carlos Slim may not be as known worldwide as some other people on this list doesn’t mean he doesn’t pack 67.8 billion dollars. Add Rupert Murdoch’s wealth to that of Bill Gates and they still barely overtake Carlos, and that says a lot. If you wonder how he got here so fast, it’s due to his company América Móvil’s stock jumping a whopping 27% in the second quarter of 2007.