Finding the Fourth Proportional to 72,247.55, 99,735.71 and 54,349.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,247.55 : 99,735.71 = 54,349.38 : x
2. Step 2: Convert to fraction form
   72,247.55/99,735.71 = 54,349.38/x
3. Step 3: Cross multiply
   72,247.55x = 99,735.71 × 54,349.38
4. Step 4: Simplify right side
   72,247.55x = 5,420,573,730.61
5. Step 5: Solve for x
   x = 5,420,573,730.61/72,247.55
6. Step 6: Final answer
   x = 75,027.79