Finding the Fourth Proportional to 31,025.62, 42,814.10 and 16,878.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,025.62 : 42,814.10 = 16,878.16 : x
2. Step 2: Convert to fraction form
   31,025.62/42,814.10 = 16,878.16/x
3. Step 3: Cross multiply
   31,025.62x = 42,814.10 × 16,878.16
4. Step 4: Simplify right side
   31,025.62x = 722,622,931.59
5. Step 5: Solve for x
   x = 722,622,931.59/31,025.62
6. Step 6: Final answer
   x = 23,291.17