Finding the Fourth Proportional to 83.27, 123.51 and 82.06

Step by Step Solution

1. Step 1: Write the proportion equation
   83.27 : 123.51 = 82.06 : x
2. Step 2: Convert to fraction form
   83.27/123.51 = 82.06/x
3. Step 3: Cross multiply
   83.27x = 123.51 × 82.06
4. Step 4: Simplify right side
   83.27x = 10,134.61
5. Step 5: Solve for x
   x = 10,134.61/83.27
6. Step 6: Final answer
   x = 121.71