Finding the Fourth Proportional to 82.37, 123.50 and 67.88

Step by Step Solution

1. Step 1: Write the proportion equation
   82.37 : 123.50 = 67.88 : x
2. Step 2: Convert to fraction form
   82.37/123.50 = 67.88/x
3. Step 3: Cross multiply
   82.37x = 123.50 × 67.88
4. Step 4: Simplify right side
   82.37x = 8,382.73
5. Step 5: Solve for x
   x = 8,382.73/82.37
6. Step 6: Final answer
   x = 101.78