Finding the Fourth Proportional to 83.29, 124.83 and 42.62

Step by Step Solution

1. Step 1: Write the proportion equation
   83.29 : 124.83 = 42.62 : x
2. Step 2: Convert to fraction form
   83.29/124.83 = 42.62/x
3. Step 3: Cross multiply
   83.29x = 124.83 × 42.62
4. Step 4: Simplify right side
   83.29x = 5,320.25
5. Step 5: Solve for x
   x = 5,320.25/83.29
6. Step 6: Final answer
   x = 63.88