Finding the Fourth Proportional to 82.23, 123.42 and 41.70

Step by Step Solution

1. Step 1: Write the proportion equation
   82.23 : 123.42 = 41.70 : x
2. Step 2: Convert to fraction form
   82.23/123.42 = 41.70/x
3. Step 3: Cross multiply
   82.23x = 123.42 × 41.70
4. Step 4: Simplify right side
   82.23x = 5,146.61
5. Step 5: Solve for x
   x = 5,146.61/82.23
6. Step 6: Final answer
   x = 62.59