Finding the Fourth Proportional to 31,062.79, 42,867.14 and 16,915.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,062.79 : 42,867.14 = 16,915.62 : x
2. Step 2: Convert to fraction form
   31,062.79/42,867.14 = 16,915.62/x
3. Step 3: Cross multiply
   31,062.79x = 42,867.14 × 16,915.62
4. Step 4: Simplify right side
   31,062.79x = 725,124,166.15
5. Step 5: Solve for x
   x = 725,124,166.15/31,062.79
6. Step 6: Final answer
   x = 23,343.82