Finding the Fourth Proportional to 52,505.71, 72,456.93 and 28,631.89

Step by Step Solution

1. Step 1: Write the proportion equation
   52,505.71 : 72,456.93 = 28,631.89 : x
2. Step 2: Convert to fraction form
   52,505.71/72,456.93 = 28,631.89/x
3. Step 3: Cross multiply
   52,505.71x = 72,456.93 × 28,631.89
4. Step 4: Simplify right side
   52,505.71x = 2,074,578,849.50
5. Step 5: Solve for x
   x = 2,074,578,849.50/52,505.71
6. Step 6: Final answer
   x = 39,511.49