Finding the Fourth Proportional to 111.89, 167.75 and 60.49

Step by Step Solution

1. Step 1: Write the proportion equation
   111.89 : 167.75 = 60.49 : x
2. Step 2: Convert to fraction form
   111.89/167.75 = 60.49/x
3. Step 3: Cross multiply
   111.89x = 167.75 × 60.49
4. Step 4: Simplify right side
   111.89x = 10,147.20
5. Step 5: Solve for x
   x = 10,147.20/111.89
6. Step 6: Final answer
   x = 90.69