Finding the Fourth Proportional to 31,060.28, 42,863.24 and 16,913.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,060.28 : 42,863.24 = 16,913.18 : x
2. Step 2: Convert to fraction form
   31,060.28/42,863.24 = 16,913.18/x
3. Step 3: Cross multiply
   31,060.28x = 42,863.24 × 16,913.18
4. Step 4: Simplify right side
   31,060.28x = 724,953,693.50
5. Step 5: Solve for x
   x = 724,953,693.50/31,060.28
6. Step 6: Final answer
   x = 23,340.22