Finding the Fourth Proportional to 43.99, 61.10 and 42.71

Step by Step Solution

1. Step 1: Write the proportion equation
   43.99 : 61.10 = 42.71 : x
2. Step 2: Convert to fraction form
   43.99/61.10 = 42.71/x
3. Step 3: Cross multiply
   43.99x = 61.10 × 42.71
4. Step 4: Simplify right side
   43.99x = 2,609.22
5. Step 5: Solve for x
   x = 2,609.22/43.99
6. Step 6: Final answer
   x = 59.32