Waltons Among Forbes' Top 20 World Billionaires by Lance Turner Posted 3/13/2012 11:32 am Updated 5 years ago Four members of Arkansas' Walton family rank among the world's billionaires, according to the latest list by Forbes magazine. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 15 days. Purchase Now Already have archive access? Login to view this article.