Finding the Fourth Proportional to 111.52, 153.84 and 82.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111.52 : 153.84 = 82.48 : x
2. Step 2: Convert to fraction form
   111.52/153.84 = 82.48/x
3. Step 3: Cross multiply
   111.52x = 153.84 × 82.48
4. Step 4: Simplify right side
   111.52x = 12,688.72
5. Step 5: Solve for x
   x = 12,688.72/111.52
6. Step 6: Final answer
   x = 113.78