Finding the Fourth Proportional to 111.03, 153.27 and 82.14

Step by Step Solution

1. Step 1: Write the proportion equation
   111.03 : 153.27 = 82.14 : x
2. Step 2: Convert to fraction form
   111.03/153.27 = 82.14/x
3. Step 3: Cross multiply
   111.03x = 153.27 × 82.14
4. Step 4: Simplify right side
   111.03x = 12,589.60
5. Step 5: Solve for x
   x = 12,589.60/111.03
6. Step 6: Final answer
   x = 113.39