Finding the Fourth Proportional to 71,315.74, 98,399.10 and 42,644.71

Step by Step Solution

1. Step 1: Write the proportion equation
   71,315.74 : 98,399.10 = 42,644.71 : x
2. Step 2: Convert to fraction form
   71,315.74/98,399.10 = 42,644.71/x
3. Step 3: Cross multiply
   71,315.74x = 98,399.10 × 42,644.71
4. Step 4: Simplify right side
   71,315.74x = 4,196,201,083.76
5. Step 5: Solve for x
   x = 4,196,201,083.76/71,315.74
6. Step 6: Final answer
   x = 58,839.76