Finding the Fourth Proportional to 31,025.60, 42,814.10 and 16,878.14

Step by Step Solution

1. Step 1: Write the proportion equation
   31,025.60 : 42,814.10 = 16,878.14 : x
2. Step 2: Convert to fraction form
   31,025.60/42,814.10 = 16,878.14/x
3. Step 3: Cross multiply
   31,025.60x = 42,814.10 × 16,878.14
4. Step 4: Simplify right side
   31,025.60x = 722,622,373.77
5. Step 5: Solve for x
   x = 722,622,373.77/31,025.60
6. Step 6: Final answer
   x = 23,291.17