Finding the Fourth Proportional to 93.38, 128.18 and 82.73

Step by Step Solution

1. Step 1: Write the proportion equation
   93.38 : 128.18 = 82.73 : x
2. Step 2: Convert to fraction form
   93.38/128.18 = 82.73/x
3. Step 3: Cross multiply
   93.38x = 128.18 × 82.73
4. Step 4: Simplify right side
   93.38x = 10,603.28
5. Step 5: Solve for x
   x = 10,603.28/93.38
6. Step 6: Final answer
   x = 113.56