-SGCC for State Grid
-PDVSA for Petróleos de Venezuela
-NIOC for National Iranian Oil Company
-Assicurazioni Generali is generally (pun somewhat intended:-P) referred to as Generali.
Furthermore, CNPC should replace, or at least be accepted for PetroChina, as CNPC is it's parent company. Also, Exor (which owns Fiat) made what would amount to about 110-115 billion USD (that's a rough estimation on the exchange rate), so I'd imagine they might need to be added. Again, this is a great quiz!
Or any businesses using Apple stuff? I am surprised also that Microsoft wouldn't be larger. They sell countless pcs to businesses, schools, and homes, not to mention the extra first party applications which are extra money (e.g. MS Office). Stunning that there are enough iphones to beat that! Also I'm sure app store / iTunes makes a huge profit.