Finding the Fourth Proportional to 82.41, 123.30 and 69.59

Step by Step Solution

1. Step 1: Write the proportion equation
   82.41 : 123.30 = 69.59 : x
2. Step 2: Convert to fraction form
   82.41/123.30 = 69.59/x
3. Step 3: Cross multiply
   82.41x = 123.30 × 69.59
4. Step 4: Simplify right side
   82.41x = 8,580.45
5. Step 5: Solve for x
   x = 8,580.45/82.41
6. Step 6: Final answer
   x = 104.12