On January 1, 20X2, Polo Corporation acquired 60% of Steeple Company's voting common stock for $300,000. At the time of the combination, Steeple reported common stock outstanding of $200,000 and retained earnings of $150,000. The book value of Steeple's net assets approximated market value except for patents that had a market value of $50,000 more than their book value. What is the amount assigned to goodwill?