Finding the Fourth Proportional to 131,516.40, 197,404.20 and 65,031.60

Step by Step Solution

1. Step 1: Write the proportion equation
   131,516.40 : 197,404.20 = 65,031.60 : x
2. Step 2: Convert to fraction form
   131,516.40/197,404.20 = 65,031.60/x
3. Step 3: Cross multiply
   131,516.40x = 197,404.20 × 65,031.60
4. Step 4: Simplify right side
   131,516.40x = 12,837,510,972.72
5. Step 5: Solve for x
   x = 12,837,510,972.72/131,516.40
6. Step 6: Final answer
   x = 97,611.48