Finding the Fourth Proportional to 88.05, 132.22 and 82.42

Step by Step Solution

1. Step 1: Write the proportion equation
   88.05 : 132.22 = 82.42 : x
2. Step 2: Convert to fraction form
   88.05/132.22 = 82.42/x
3. Step 3: Cross multiply
   88.05x = 132.22 × 82.42
4. Step 4: Simplify right side
   88.05x = 10,896.88
5. Step 5: Solve for x
   x = 10,896.88/88.05
6. Step 6: Final answer
   x = 123.75