Finding the Fourth Proportional to 114.88, 158.72 and 82.12

Step by Step Solution

1. Step 1: Write the proportion equation
   114.88 : 158.72 = 82.12 : x
2. Step 2: Convert to fraction form
   114.88/158.72 = 82.12/x
3. Step 3: Cross multiply
   114.88x = 158.72 × 82.12
4. Step 4: Simplify right side
   114.88x = 13,034.09
5. Step 5: Solve for x
   x = 13,034.09/114.88
6. Step 6: Final answer
   x = 113.46