Finding the Fourth Proportional to 486,016.50, 729,062.82 and 131,025.09

Step by Step Solution

1. Step 1: Write the proportion equation
   486,016.50 : 729,062.82 = 131,025.09 : x
2. Step 2: Convert to fraction form
   486,016.50/729,062.82 = 131,025.09/x
3. Step 3: Cross multiply
   486,016.50x = 729,062.82 × 131,025.09
4. Step 4: Simplify right side
   486,016.50x = 95,525,521,606.15
5. Step 5: Solve for x
   x = 95,525,521,606.15/486,016.50
6. Step 6: Final answer
   x = 196,547.90