Finding the Fourth Proportional to 82.42, 113.55 and 62.69

Step by Step Solution

1. Step 1: Write the proportion equation
   82.42 : 113.55 = 62.69 : x
2. Step 2: Convert to fraction form
   82.42/113.55 = 62.69/x
3. Step 3: Cross multiply
   82.42x = 113.55 × 62.69
4. Step 4: Simplify right side
   82.42x = 7,118.64
5. Step 5: Solve for x
   x = 7,118.64/82.42
6. Step 6: Final answer
   x = 86.37