Finding the Fourth Proportional to 83.25, 124.92 and 42.69

Step by Step Solution

1. Step 1: Write the proportion equation
   83.25 : 124.92 = 42.69 : x
2. Step 2: Convert to fraction form
   83.25/124.92 = 42.69/x
3. Step 3: Cross multiply
   83.25x = 124.92 × 42.69
4. Step 4: Simplify right side
   83.25x = 5,332.83
5. Step 5: Solve for x
   x = 5,332.83/83.25
6. Step 6: Final answer
   x = 64.06