Finding the Fourth Proportional to 72,240.93, 99,648.89 and 47,711.89

Step by Step Solution

1. Step 1: Write the proportion equation
   72,240.93 : 99,648.89 = 47,711.89 : x
2. Step 2: Convert to fraction form
   72,240.93/99,648.89 = 47,711.89/x
3. Step 3: Cross multiply
   72,240.93x = 99,648.89 × 47,711.89
4. Step 4: Simplify right side
   72,240.93x = 4,754,436,141.50
5. Step 5: Solve for x
   x = 4,754,436,141.50/72,240.93
6. Step 6: Final answer
   x = 65,813.61