Finding the Fourth Proportional to 82.42, 113.72 and 49.23

Step by Step Solution

1. Step 1: Write the proportion equation
   82.42 : 113.72 = 49.23 : x
2. Step 2: Convert to fraction form
   82.42/113.72 = 49.23/x
3. Step 3: Cross multiply
   82.42x = 113.72 × 49.23
4. Step 4: Simplify right side
   82.42x = 5,598.19
5. Step 5: Solve for x
   x = 5,598.19/82.42
6. Step 6: Final answer
   x = 67.92