Finding the Fourth Proportional to 132,196.40, 198,424.20 and 65,711.60

Step by Step Solution

1. Step 1: Write the proportion equation
   132,196.40 : 198,424.20 = 65,711.60 : x
2. Step 2: Convert to fraction form
   132,196.40/198,424.20 = 65,711.60/x
3. Step 3: Cross multiply
   132,196.40x = 198,424.20 × 65,711.60
4. Step 4: Simplify right side
   132,196.40x = 13,038,771,660.72
5. Step 5: Solve for x
   x = 13,038,771,660.72/132,196.40
6. Step 6: Final answer
   x = 98,631.82