Finding the Fourth Proportional to 72,264.42, 108,396.78 and 39,000.15

Step by Step Solution

1. Step 1: Write the proportion equation
   72,264.42 : 108,396.78 = 39,000.15 : x
2. Step 2: Convert to fraction form
   72,264.42/108,396.78 = 39,000.15/x
3. Step 3: Cross multiply
   72,264.42x = 108,396.78 × 39,000.15
4. Step 4: Simplify right side
   72,264.42x = 4,227,490,679.52
5. Step 5: Solve for x
   x = 4,227,490,679.52/72,264.42
6. Step 6: Final answer
   x = 58,500.31