Finding the Fourth Proportional to 93.30, 128.82 and 82.32

Step by Step Solution

1. Step 1: Write the proportion equation
   93.30 : 128.82 = 82.32 : x
2. Step 2: Convert to fraction form
   93.30/128.82 = 82.32/x
3. Step 3: Cross multiply
   93.30x = 128.82 × 82.32
4. Step 4: Simplify right side
   93.30x = 10,604.46
5. Step 5: Solve for x
   x = 10,604.46/93.30
6. Step 6: Final answer
   x = 113.66