Finding the Fourth Proportional to 99,707.52, 137,458.56 and 79,632

Step by Step Solution

1. Step 1: Write the proportion equation
   99,707.52 : 137,458.56 = 79,632 : x
2. Step 2: Convert to fraction form
   99,707.52/137,458.56 = 79,632/x
3. Step 3: Cross multiply
   99,707.52x = 137,458.56 × 79,632
4. Step 4: Simplify right side
   99,707.52x = 10,946,100,049.92
5. Step 5: Solve for x
   x = 10,946,100,049.92/99,707.52
6. Step 6: Final answer
   x = 109,782.09