Finding the Fourth Proportional to 82.48, 113.78 and 49.29

Step by Step Solution

1. Step 1: Write the proportion equation
   82.48 : 113.78 = 49.29 : x
2. Step 2: Convert to fraction form
   82.48/113.78 = 49.29/x
3. Step 3: Cross multiply
   82.48x = 113.78 × 49.29
4. Step 4: Simplify right side
   82.48x = 5,608.22
5. Step 5: Solve for x
   x = 5,608.22/82.48
6. Step 6: Final answer
   x = 67.99