Finding the Fourth Proportional to 269.46, 404.18 and 86.82

Step by Step Solution

1. Step 1: Write the proportion equation
   269.46 : 404.18 = 86.82 : x
2. Step 2: Convert to fraction form
   269.46/404.18 = 86.82/x
3. Step 3: Cross multiply
   269.46x = 404.18 × 86.82
4. Step 4: Simplify right side
   269.46x = 35,090.91
5. Step 5: Solve for x
   x = 35,090.91/269.46
6. Step 6: Final answer
   x = 130.23