Finding the Fourth Proportional to 82.76, 123.96 and 69.18

Step by Step Solution

1. Step 1: Write the proportion equation
   82.76 : 123.96 = 69.18 : x
2. Step 2: Convert to fraction form
   82.76/123.96 = 69.18/x
3. Step 3: Cross multiply
   82.76x = 123.96 × 69.18
4. Step 4: Simplify right side
   82.76x = 8,575.55
5. Step 5: Solve for x
   x = 8,575.55/82.76
6. Step 6: Final answer
   x = 103.62