Finding the Fourth Proportional to 78,456.99, 108,271.03 and 42,647

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456.99 : 108,271.03 = 42,647 : x
2. Step 2: Convert to fraction form
   78,456.99/108,271.03 = 42,647/x
3. Step 3: Cross multiply
   78,456.99x = 108,271.03 × 42,647
4. Step 4: Simplify right side
   78,456.99x = 4,617,434,616.41
5. Step 5: Solve for x
   x = 4,617,434,616.41/78,456.99
6. Step 6: Final answer
   x = 58,853.07