Finding the Fourth Proportional to 131,456.34, 197,105.53 and 51,398.92

Step by Step Solution

1. Step 1: Write the proportion equation
   131,456.34 : 197,105.53 = 51,398.92 : x
2. Step 2: Convert to fraction form
   131,456.34/197,105.53 = 51,398.92/x
3. Step 3: Cross multiply
   131,456.34x = 197,105.53 × 51,398.92
4. Step 4: Simplify right side
   131,456.34x = 10,131,011,368.03
5. Step 5: Solve for x
   x = 10,131,011,368.03/131,456.34
6. Step 6: Final answer
   x = 77,067.50