Finding the Fourth Proportional to 31,156, 43,002.96 and 17,915.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156 : 43,002.96 = 17,915.68 : x
2. Step 2: Convert to fraction form
   31,156/43,002.96 = 17,915.68/x
3. Step 3: Cross multiply
   31,156x = 43,002.96 × 17,915.68
4. Step 4: Simplify right side
   31,156x = 770,427,270.41
5. Step 5: Solve for x
   x = 770,427,270.41/31,156
6. Step 6: Final answer
   x = 24,728.05