Finding the Fourth Proportional to 82.98, 123.88 and 63.61

Step by Step Solution

1. Step 1: Write the proportion equation
   82.98 : 123.88 = 63.61 : x
2. Step 2: Convert to fraction form
   82.98/123.88 = 63.61/x
3. Step 3: Cross multiply
   82.98x = 123.88 × 63.61
4. Step 4: Simplify right side
   82.98x = 7,880.01
5. Step 5: Solve for x
   x = 7,880.01/82.98
6. Step 6: Final answer
   x = 94.96