Finding the Fourth Proportional to 269.92, 404.63 and 105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269.92 : 404.63 = 105.50 : x
2. Step 2: Convert to fraction form
   269.92/404.63 = 105.50/x
3. Step 3: Cross multiply
   269.92x = 404.63 × 105.50
4. Step 4: Simplify right side
   269.92x = 42,685.91
5. Step 5: Solve for x
   x = 42,685.91/269.92
6. Step 6: Final answer
   x = 158.14