Finding the Fourth Proportional to 31,098.82, 42,915.45 and 17,671.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,098.82 : 42,915.45 = 17,671.30 : x
2. Step 2: Convert to fraction form
   31,098.82/42,915.45 = 17,671.30/x
3. Step 3: Cross multiply
   31,098.82x = 42,915.45 × 17,671.30
4. Step 4: Simplify right side
   31,098.82x = 758,371,791.59
5. Step 5: Solve for x
   x = 758,371,791.59/31,098.82
6. Step 6: Final answer
   x = 24,385.87