Finding the Fourth Proportional to 99,134.82, 148,571.01 and 72,715.86

Step by Step Solution

1. Step 1: Write the proportion equation
   99,134.82 : 148,571.01 = 72,715.86 : x
2. Step 2: Convert to fraction form
   99,134.82/148,571.01 = 72,715.86/x
3. Step 3: Cross multiply
   99,134.82x = 148,571.01 × 72,715.86
4. Step 4: Simplify right side
   99,134.82x = 10,803,468,763.22
5. Step 5: Solve for x
   x = 10,803,468,763.22/99,134.82
6. Step 6: Final answer
   x = 108,977.54