Finding the Fourth Proportional to 269.55, 404.31 and 104.98

Step by Step Solution

1. Step 1: Write the proportion equation
   269.55 : 404.31 = 104.98 : x
2. Step 2: Convert to fraction form
   269.55/404.31 = 104.98/x
3. Step 3: Cross multiply
   269.55x = 404.31 × 104.98
4. Step 4: Simplify right side
   269.55x = 42,443.85
5. Step 5: Solve for x
   x = 42,443.85/269.55
6. Step 6: Final answer
   x = 157.46