Finding the Fourth Proportional to 280,404.72, 386,953.61 and 159,543.41

Step by Step Solution

1. Step 1: Write the proportion equation
   280,404.72 : 386,953.61 = 159,543.41 : x
2. Step 2: Convert to fraction form
   280,404.72/386,953.61 = 159,543.41/x
3. Step 3: Cross multiply
   280,404.72x = 386,953.61 × 159,543.41
4. Step 4: Simplify right side
   280,404.72x = 61,735,895,718.73
5. Step 5: Solve for x
   x = 61,735,895,718.73/280,404.72
6. Step 6: Final answer
   x = 220,167.11