Finding the Fourth Proportional to 31,062.18, 42,866.01 and 16,915.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,062.18 : 42,866.01 = 16,915.08 : x
2. Step 2: Convert to fraction form
   31,062.18/42,866.01 = 16,915.08/x
3. Step 3: Cross multiply
   31,062.18x = 42,866.01 × 16,915.08
4. Step 4: Simplify right side
   31,062.18x = 725,081,988.43
5. Step 5: Solve for x
   x = 725,081,988.43/31,062.18
6. Step 6: Final answer
   x = 23,342.92