Finding the Fourth Proportional to 132,308.78, 198,495.57 and 65,780.24

Step by Step Solution

1. Step 1: Write the proportion equation
   132,308.78 : 198,495.57 = 65,780.24 : x
2. Step 2: Convert to fraction form
   132,308.78/198,495.57 = 65,780.24/x
3. Step 3: Cross multiply
   132,308.78x = 198,495.57 × 65,780.24
4. Step 4: Simplify right side
   132,308.78x = 13,057,086,233.54
5. Step 5: Solve for x
   x = 13,057,086,233.54/132,308.78
6. Step 6: Final answer
   x = 98,686.47