Finding the Fourth Proportional to 82.11, 123.24 and 67.83

Step by Step Solution

1. Step 1: Write the proportion equation
   82.11 : 123.24 = 67.83 : x
2. Step 2: Convert to fraction form
   82.11/123.24 = 67.83/x
3. Step 3: Cross multiply
   82.11x = 123.24 × 67.83
4. Step 4: Simplify right side
   82.11x = 8,359.37
5. Step 5: Solve for x
   x = 8,359.37/82.11
6. Step 6: Final answer
   x = 101.81