Finding the Fourth Proportional to 264,105.88, 396,196.48 and 86,626.78

Step by Step Solution

1. Step 1: Write the proportion equation
   264,105.88 : 396,196.48 = 86,626.78 : x
2. Step 2: Convert to fraction form
   264,105.88/396,196.48 = 86,626.78/x
3. Step 3: Cross multiply
   264,105.88x = 396,196.48 × 86,626.78
4. Step 4: Simplify right side
   264,105.88x = 34,321,225,309.73
5. Step 5: Solve for x
   x = 34,321,225,309.73/264,105.88
6. Step 6: Final answer
   x = 129,952.52