Finding the Fourth Proportional to 51,651, 71,275.32 and 28,985.22

Step by Step Solution

1. Step 1: Write the proportion equation
   51,651 : 71,275.32 = 28,985.22 : x
2. Step 2: Convert to fraction form
   51,651/71,275.32 = 28,985.22/x
3. Step 3: Cross multiply
   51,651x = 71,275.32 × 28,985.22
4. Step 4: Simplify right side
   51,651x = 2,065,930,830.77
5. Step 5: Solve for x
   x = 2,065,930,830.77/51,651
6. Step 6: Final answer
   x = 39,997.89