Finding the Fourth Proportional to 99,105.72, 148,616.65 and 39,925.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,105.72 : 148,616.65 = 39,925.50 : x
2. Step 2: Convert to fraction form
   99,105.72/148,616.65 = 39,925.50/x
3. Step 3: Cross multiply
   99,105.72x = 148,616.65 × 39,925.50
4. Step 4: Simplify right side
   99,105.72x = 5,933,594,059.58
5. Step 5: Solve for x
   x = 5,933,594,059.58/99,105.72
6. Step 6: Final answer
   x = 59,871.36