Finding the Fourth Proportional to 82.27, 113.53 and 45.42

Step by Step Solution

1. Step 1: Write the proportion equation
   82.27 : 113.53 = 45.42 : x
2. Step 2: Convert to fraction form
   82.27/113.53 = 45.42/x
3. Step 3: Cross multiply
   82.27x = 113.53 × 45.42
4. Step 4: Simplify right side
   82.27x = 5,156.31
5. Step 5: Solve for x
   x = 5,156.31/82.27
6. Step 6: Final answer
   x = 62.68