Finding the Fourth Proportional to 280,350.72, 386,892.72 and 159,509.52

Step by Step Solution

1. Step 1: Write the proportion equation
   280,350.72 : 386,892.72 = 159,509.52 : x
2. Step 2: Convert to fraction form
   280,350.72/386,892.72 = 159,509.52/x
3. Step 3: Cross multiply
   280,350.72x = 386,892.72 × 159,509.52
4. Step 4: Simplify right side
   280,350.72x = 61,713,072,058.69
5. Step 5: Solve for x
   x = 61,713,072,058.69/280,350.72
6. Step 6: Final answer
   x = 220,128.10