Finding the Fourth Proportional to 43.49, 59.62 and 42.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43.49 : 59.62 = 42.72 : x
2. Step 2: Convert to fraction form
   43.49/59.62 = 42.72/x
3. Step 3: Cross multiply
   43.49x = 59.62 × 42.72
4. Step 4: Simplify right side
   43.49x = 2,546.86
5. Step 5: Solve for x
   x = 2,546.86/43.49
6. Step 6: Final answer
   x = 58.57