Finding the Fourth Proportional to 111.92, 167.88 and 60.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111.92 : 167.88 = 60.56 : x
2. Step 2: Convert to fraction form
   111.92/167.88 = 60.56/x
3. Step 3: Cross multiply
   111.92x = 167.88 × 60.56
4. Step 4: Simplify right side
   111.92x = 10,166.81
5. Step 5: Solve for x
   x = 10,166.81/111.92
6. Step 6: Final answer
   x = 90.84