Finding the Fourth Proportional to 71,932.72, 99,267.30 and 40,100.95

Step by Step Solution

1. Step 1: Write the proportion equation
   71,932.72 : 99,267.30 = 40,100.95 : x
2. Step 2: Convert to fraction form
   71,932.72/99,267.30 = 40,100.95/x
3. Step 3: Cross multiply
   71,932.72x = 99,267.30 × 40,100.95
4. Step 4: Simplify right side
   71,932.72x = 3,980,713,033.94
5. Step 5: Solve for x
   x = 3,980,713,033.94/71,932.72
6. Step 6: Final answer
   x = 55,339.39