Finding the Fourth Proportional to 111.38, 167.69 and 92.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111.38 : 167.69 = 92.42 : x
2. Step 2: Convert to fraction form
   111.38/167.69 = 92.42/x
3. Step 3: Cross multiply
   111.38x = 167.69 × 92.42
4. Step 4: Simplify right side
   111.38x = 15,496.96
5. Step 5: Solve for x
   x = 15,496.96/111.38
6. Step 6: Final answer
   x = 139.13