Finding the Fourth Proportional to 82.51, 123.83 and 67.39

Step by Step Solution

1. Step 1: Write the proportion equation
   82.51 : 123.83 = 67.39 : x
2. Step 2: Convert to fraction form
   82.51/123.83 = 67.39/x
3. Step 3: Cross multiply
   82.51x = 123.83 × 67.39
4. Step 4: Simplify right side
   82.51x = 8,344.90
5. Step 5: Solve for x
   x = 8,344.90/82.51
6. Step 6: Final answer
   x = 101.14