Finding the Fourth Proportional to 111.59, 167.31 and 60.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111.59 : 167.31 = 60.18 : x
2. Step 2: Convert to fraction form
   111.59/167.31 = 60.18/x
3. Step 3: Cross multiply
   111.59x = 167.31 × 60.18
4. Step 4: Simplify right side
   111.59x = 10,067.86
5. Step 5: Solve for x
   x = 10,067.86/111.59
6. Step 6: Final answer
   x = 90.22