Finding the Fourth Proportional to 99,147.15, 148,868.31 and 40,098.15

Step by Step Solution

1. Step 1: Write the proportion equation
   99,147.15 : 148,868.31 = 40,098.15 : x
2. Step 2: Convert to fraction form
   99,147.15/148,868.31 = 40,098.15/x
3. Step 3: Cross multiply
   99,147.15x = 148,868.31 × 40,098.15
4. Step 4: Simplify right side
   99,147.15x = 5,969,343,824.63
5. Step 5: Solve for x
   x = 5,969,343,824.63/99,147.15
6. Step 6: Final answer
   x = 60,206.91