Finding the Fourth Proportional to 280,258.92, 386,765.52 and 152,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   280,258.92 : 386,765.52 = 152,942.72 : x
2. Step 2: Convert to fraction form
   280,258.92/386,765.52 = 152,942.72/x
3. Step 3: Cross multiply
   280,258.92x = 386,765.52 × 152,942.72
4. Step 4: Simplify right side
   280,258.92x = 59,152,970,631.01
5. Step 5: Solve for x
   x = 59,152,970,631.01/280,258.92
6. Step 6: Final answer
   x = 211,065.43