Finding the Fourth Proportional to 131,500.42, 197,300.32 and 78,946.54

Step by Step Solution

1. Step 1: Write the proportion equation
   131,500.42 : 197,300.32 = 78,946.54 : x
2. Step 2: Convert to fraction form
   131,500.42/197,300.32 = 78,946.54/x
3. Step 3: Cross multiply
   131,500.42x = 197,300.32 × 78,946.54
4. Step 4: Simplify right side
   131,500.42x = 15,576,177,604.89
5. Step 5: Solve for x
   x = 15,576,177,604.89/131,500.42
6. Step 6: Final answer
   x = 118,449.64