Finding the Fourth Proportional to 112.32, 168.59 and 111.48

Step by Step Solution

1. Step 1: Write the proportion equation
   112.32 : 168.59 = 111.48 : x
2. Step 2: Convert to fraction form
   112.32/168.59 = 111.48/x
3. Step 3: Cross multiply
   112.32x = 168.59 × 111.48
4. Step 4: Simplify right side
   112.32x = 18,793.86
5. Step 5: Solve for x
   x = 18,793.86/112.32
6. Step 6: Final answer
   x = 167.32