Finding the Fourth Proportional to 103.58, 142.88 and 82.82

Step by Step Solution

1. Step 1: Write the proportion equation
   103.58 : 142.88 = 82.82 : x
2. Step 2: Convert to fraction form
   103.58/142.88 = 82.82/x
3. Step 3: Cross multiply
   103.58x = 142.88 × 82.82
4. Step 4: Simplify right side
   103.58x = 11,833.32
5. Step 5: Solve for x
   x = 11,833.32/103.58
6. Step 6: Final answer
   x = 114.24