Finding the Fourth Proportional to 82.42, 123.60 and 41.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82.42 : 123.60 = 41.80 : x
2. Step 2: Convert to fraction form
   82.42/123.60 = 41.80/x
3. Step 3: Cross multiply
   82.42x = 123.60 × 41.80
4. Step 4: Simplify right side
   82.42x = 5,166.48
5. Step 5: Solve for x
   x = 5,166.48/82.42
6. Step 6: Final answer
   x = 62.68