Finding the Fourth Proportional to 287,066.76, 396,146.88 and 159,741.24

Step by Step Solution

1. Step 1: Write the proportion equation
   287,066.76 : 396,146.88 = 159,741.24 : x
2. Step 2: Convert to fraction form
   287,066.76/396,146.88 = 159,741.24/x
3. Step 3: Cross multiply
   287,066.76x = 396,146.88 × 159,741.24
4. Step 4: Simplify right side
   287,066.76x = 63,280,993,833.33
5. Step 5: Solve for x
   x = 63,280,993,833.33/287,066.76
6. Step 6: Final answer
   x = 220,439.99