Finding the Fourth Proportional to 82.56, 123.24 and 69.06

Step by Step Solution

1. Step 1: Write the proportion equation
   82.56 : 123.24 = 69.06 : x
2. Step 2: Convert to fraction form
   82.56/123.24 = 69.06/x
3. Step 3: Cross multiply
   82.56x = 123.24 × 69.06
4. Step 4: Simplify right side
   82.56x = 8,510.95
5. Step 5: Solve for x
   x = 8,510.95/82.56
6. Step 6: Final answer
   x = 103.09