Finding the Fourth Proportional to 83.48, 125.24 and 42.89

Step by Step Solution

1. Step 1: Write the proportion equation
   83.48 : 125.24 = 42.89 : x
2. Step 2: Convert to fraction form
   83.48/125.24 = 42.89/x
3. Step 3: Cross multiply
   83.48x = 125.24 × 42.89
4. Step 4: Simplify right side
   83.48x = 5,371.33
5. Step 5: Solve for x
   x = 5,371.33/83.48
6. Step 6: Final answer
   x = 64.34