Finding the Fourth Proportional to 79,280.57, 109,406.34 and 43,470.47

Step by Step Solution

1. Step 1: Write the proportion equation
   79,280.57 : 109,406.34 = 43,470.47 : x
2. Step 2: Convert to fraction form
   79,280.57/109,406.34 = 43,470.47/x
3. Step 3: Cross multiply
   79,280.57x = 109,406.34 × 43,470.47
4. Step 4: Simplify right side
   79,280.57x = 4,755,945,020.78
5. Step 5: Solve for x
   x = 4,755,945,020.78/79,280.57
6. Step 6: Final answer
   x = 59,988.78