Finding the Fourth Proportional to 82.27, 123.42 and 43.74

Step by Step Solution

1. Step 1: Write the proportion equation
   82.27 : 123.42 = 43.74 : x
2. Step 2: Convert to fraction form
   82.27/123.42 = 43.74/x
3. Step 3: Cross multiply
   82.27x = 123.42 × 43.74
4. Step 4: Simplify right side
   82.27x = 5,398.55
5. Step 5: Solve for x
   x = 5,398.55/82.27
6. Step 6: Final answer
   x = 65.62