Finding the Fourth Proportional to 111.84, 154.16 and 82.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 154.16 = 82.72 : x
2. Step 2: Convert to fraction form
   111.84/154.16 = 82.72/x
3. Step 3: Cross multiply
   111.84x = 154.16 × 82.72
4. Step 4: Simplify right side
   111.84x = 12,752.12
5. Step 5: Solve for x
   x = 12,752.12/111.84
6. Step 6: Final answer
   x = 114.02