Finding the Fourth Proportional to 31,124.13, 42,951.61 and 16,977.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,124.13 : 42,951.61 = 16,977.27 : x
2. Step 2: Convert to fraction form
   31,124.13/42,951.61 = 16,977.27/x
3. Step 3: Cross multiply
   31,124.13x = 42,951.61 × 16,977.27
4. Step 4: Simplify right side
   31,124.13x = 729,201,079.90
5. Step 5: Solve for x
   x = 729,201,079.90/31,124.13
6. Step 6: Final answer
   x = 23,428.80