Finding the Fourth Proportional to 269.82, 404.42 and 107.31

Step by Step Solution

1. Step 1: Write the proportion equation
   269.82 : 404.42 = 107.31 : x
2. Step 2: Convert to fraction form
   269.82/404.42 = 107.31/x
3. Step 3: Cross multiply
   269.82x = 404.42 × 107.31
4. Step 4: Simplify right side
   269.82x = 43,398.31
5. Step 5: Solve for x
   x = 43,398.31/269.82
6. Step 6: Final answer
   x = 160.84