Finding the Fourth Proportional to 52,807.30, 72,875.77 and 28,935.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,807.30 : 72,875.77 = 28,935.50 : x
2. Step 2: Convert to fraction form
   52,807.30/72,875.77 = 28,935.50/x
3. Step 3: Cross multiply
   52,807.30x = 72,875.77 × 28,935.50
4. Step 4: Simplify right side
   52,807.30x = 2,108,696,406.12
5. Step 5: Solve for x
   x = 2,108,696,406.12/52,807.30
6. Step 6: Final answer
   x = 39,931.91