Finding the Fourth Proportional to 269.42, 404.15 and 123.17

Step by Step Solution

1. Step 1: Write the proportion equation
   269.42 : 404.15 = 123.17 : x
2. Step 2: Convert to fraction form
   269.42/404.15 = 123.17/x
3. Step 3: Cross multiply
   269.42x = 404.15 × 123.17
4. Step 4: Simplify right side
   269.42x = 49,776.52
5. Step 5: Solve for x
   x = 49,776.52/269.42
6. Step 6: Final answer
   x = 184.76