Finding the Fourth Proportional to 31,116.43, 42,940.29 and 16,969.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,116.43 : 42,940.29 = 16,969.24 : x
2. Step 2: Convert to fraction form
   31,116.43/42,940.29 = 16,969.24/x
3. Step 3: Cross multiply
   31,116.43x = 42,940.29 × 16,969.24
4. Step 4: Simplify right side
   31,116.43x = 728,664,086.68
5. Step 5: Solve for x
   x = 728,664,086.68/31,116.43
6. Step 6: Final answer
   x = 23,417.34