Finding the Fourth Proportional to 82.58, 113.98 and 49.83

Step by Step Solution

1. Step 1: Write the proportion equation
   82.58 : 113.98 = 49.83 : x
2. Step 2: Convert to fraction form
   82.58/113.98 = 49.83/x
3. Step 3: Cross multiply
   82.58x = 113.98 × 49.83
4. Step 4: Simplify right side
   82.58x = 5,679.62
5. Step 5: Solve for x
   x = 5,679.62/82.58
6. Step 6: Final answer
   x = 68.78