Finding the Fourth Proportional to 99,080.77, 148,648.71 and 39,902.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,080.77 : 148,648.71 = 39,902.59 : x
2. Step 2: Convert to fraction form
   99,080.77/148,648.71 = 39,902.59/x
3. Step 3: Cross multiply
   99,080.77x = 148,648.71 × 39,902.59
4. Step 4: Simplify right side
   99,080.77x = 5,931,468,529.16
5. Step 5: Solve for x
   x = 5,931,468,529.16/99,080.77
6. Step 6: Final answer
   x = 59,864.98