Finding the Fourth Proportional to 31,098.16, 42,915.99 and 16,951.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,098.16 : 42,915.99 = 16,951.78 : x
2. Step 2: Convert to fraction form
   31,098.16/42,915.99 = 16,951.78/x
3. Step 3: Cross multiply
   31,098.16x = 42,915.99 × 16,951.78
4. Step 4: Simplify right side
   31,098.16x = 727,502,420.96
5. Step 5: Solve for x
   x = 727,502,420.96/31,098.16
6. Step 6: Final answer
   x = 23,393.74