Finding the Fourth Proportional to 111.91, 167.67 and 60.43

Step by Step Solution

1. Step 1: Write the proportion equation
   111.91 : 167.67 = 60.43 : x
2. Step 2: Convert to fraction form
   111.91/167.67 = 60.43/x
3. Step 3: Cross multiply
   111.91x = 167.67 × 60.43
4. Step 4: Simplify right side
   111.91x = 10,132.30
5. Step 5: Solve for x
   x = 10,132.30/111.91
6. Step 6: Final answer
   x = 90.54