Forbes' comprehensive list of the world's billionaires (there are 1226) came out recently, and we were curious -- are there women on the list? Turns out, there are. Yes, men far outnumber the ladies. But starting at number 11, women help fill out the ranks of the fabulously wealthy. Where do these fortunes come from? Uniformly, these top six women have shrewdly managed the companies and fortunes handed to them by husbands and fathers. But most of these women have put in their own hard work into...