Finding the Fourth Proportional to 108,816.93, 150,229.86 and 72,508.80

Step by Step Solution

1. Step 1: Write the proportion equation
   108,816.93 : 150,229.86 = 72,508.80 : x
2. Step 2: Convert to fraction form
   108,816.93/150,229.86 = 72,508.80/x
3. Step 3: Cross multiply
   108,816.93x = 150,229.86 × 72,508.80
4. Step 4: Simplify right side
   108,816.93x = 10,892,986,872.77
5. Step 5: Solve for x
   x = 10,892,986,872.77/108,816.93
6. Step 6: Final answer
   x = 100,103.79