    Sentence 1: With an estimated net worth of  $ 17 billion , Mrs, Kroc ranked No. 121 on  Forbes magazine's latest'list of the nation 's  wealthiest people .    Sentence 2: Kroc ranked No. 121 on Forbes  magazine 's latest list of the nation 's  wealthiest people *, with an estimated net  worth of $ 1,7 billion .