Finding the Fourth Proportional to 82.10, 113.27 and 49.34

Step by Step Solution

1. Step 1: Write the proportion equation
   82.10 : 113.27 = 49.34 : x
2. Step 2: Convert to fraction form
   82.10/113.27 = 49.34/x
3. Step 3: Cross multiply
   82.10x = 113.27 × 49.34
4. Step 4: Simplify right side
   82.10x = 5,588.78
5. Step 5: Solve for x
   x = 5,588.78/82.10
6. Step 6: Final answer
   x = 68.07