Finding the Fourth Proportional to 31,085.24, 42,898.14 and 16,938.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.24 : 42,898.14 = 16,938.08 : x
2. Step 2: Convert to fraction form
   31,085.24/42,898.14 = 16,938.08/x
3. Step 3: Cross multiply
   31,085.24x = 42,898.14 × 16,938.08
4. Step 4: Simplify right side
   31,085.24x = 726,612,127.17
5. Step 5: Solve for x
   x = 726,612,127.17/31,085.24
6. Step 6: Final answer
   x = 23,374.83