Finding the Fourth Proportional to 82.56, 123.85 and 43.94

Step by Step Solution

1. Step 1: Write the proportion equation
   82.56 : 123.85 = 43.94 : x
2. Step 2: Convert to fraction form
   82.56/123.85 = 43.94/x
3. Step 3: Cross multiply
   82.56x = 123.85 × 43.94
4. Step 4: Simplify right side
   82.56x = 5,441.97
5. Step 5: Solve for x
   x = 5,441.97/82.56
6. Step 6: Final answer
   x = 65.92