Finding the Fourth Proportional to 132,741.18, 198,849.33 and 99,498.78

Step by Step Solution

1. Step 1: Write the proportion equation
   132,741.18 : 198,849.33 = 99,498.78 : x
2. Step 2: Convert to fraction form
   132,741.18/198,849.33 = 99,498.78/x
3. Step 3: Cross multiply
   132,741.18x = 198,849.33 × 99,498.78
4. Step 4: Simplify right side
   132,741.18x = 19,785,265,738.82
5. Step 5: Solve for x
   x = 19,785,265,738.82/132,741.18
6. Step 6: Final answer
   x = 149,051.45