Finding the Fourth Proportional to 31,062.98, 42,867.60 and 16,915.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,062.98 : 42,867.60 = 16,915.83 : x
2. Step 2: Convert to fraction form
   31,062.98/42,867.60 = 16,915.83/x
3. Step 3: Cross multiply
   31,062.98x = 42,867.60 × 16,915.83
4. Step 4: Simplify right side
   31,062.98x = 725,141,034.11
5. Step 5: Solve for x
   x = 725,141,034.11/31,062.98
6. Step 6: Final answer
   x = 23,344.22