Finding the Fourth Proportional to 31,124.52, 42,951.96 and 16,977.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,124.52 : 42,951.96 = 16,977.60 : x
2. Step 2: Convert to fraction form
   31,124.52/42,951.96 = 16,977.60/x
3. Step 3: Cross multiply
   31,124.52x = 42,951.96 × 16,977.60
4. Step 4: Simplify right side
   31,124.52x = 729,221,196.10
5. Step 5: Solve for x
   x = 729,221,196.10/31,124.52
6. Step 6: Final answer
   x = 23,429.15