Finding the Fourth Proportional to 111.62, 167.31 and 60.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111.62 : 167.31 = 60.25 : x
2. Step 2: Convert to fraction form
   111.62/167.31 = 60.25/x
3. Step 3: Cross multiply
   111.62x = 167.31 × 60.25
4. Step 4: Simplify right side
   111.62x = 10,080.01
5. Step 5: Solve for x
   x = 10,080.01/111.62
6. Step 6: Final answer
   x = 90.31