Finding the Fourth Proportional to 111.53, 167.15 and 60.19

Step by Step Solution

1. Step 1: Write the proportion equation
   111.53 : 167.15 = 60.19 : x
2. Step 2: Convert to fraction form
   111.53/167.15 = 60.19/x
3. Step 3: Cross multiply
   111.53x = 167.15 × 60.19
4. Step 4: Simplify right side
   111.53x = 10,060.04
5. Step 5: Solve for x
   x = 10,060.04/111.53
6. Step 6: Final answer
   x = 90.20