On January 1, 2021, Ravetch Corporation's projected benefit obligation was $45 million. During 2021, pension benefits paid by the trustee were $5 million. Service cost for 2021 is $12 million. Pension plan assets (at fair value) increased during 2021 by $7 million as expected. At the end of 2021, there were no pension-related other comprehensive income (OCI) accounts. The actuary's discount rate was 10%. Required: Determine the amount of the projected benefit obligation at December 31, 2021. (Enter your answers in millions rounded to 2 decimal places (i.e., 5,500,000 should be entered as 5.50). Amounts to be deducted should be indicated with a minus sign.) Projected Benefit Obligation Beginning of 2021 End of 2021