Finding the Fourth Proportional to 43.69, 60.59 and 42.31

Step by Step Solution

1. Step 1: Write the proportion equation
   43.69 : 60.59 = 42.31 : x
2. Step 2: Convert to fraction form
   43.69/60.59 = 42.31/x
3. Step 3: Cross multiply
   43.69x = 60.59 × 42.31
4. Step 4: Simplify right side
   43.69x = 2,563.35
5. Step 5: Solve for x
   x = 2,563.35/43.69
6. Step 6: Final answer
   x = 58.67