Finding the Fourth Proportional to 31,111.33, 42,932.08 and 17,680.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.33 : 42,932.08 = 17,680.81 : x
2. Step 2: Convert to fraction form
   31,111.33/42,932.08 = 17,680.81/x
3. Step 3: Cross multiply
   31,111.33x = 42,932.08 × 17,680.81
4. Step 4: Simplify right side
   31,111.33x = 759,073,949.38
5. Step 5: Solve for x
   x = 759,073,949.38/31,111.33
6. Step 6: Final answer
   x = 24,398.63