Finding the Fourth Proportional to 280,281.76, 386,788.72 and 152,957.35

Step by Step Solution

1. Step 1: Write the proportion equation
   280,281.76 : 386,788.72 = 152,957.35 : x
2. Step 2: Convert to fraction form
   280,281.76/386,788.72 = 152,957.35/x
3. Step 3: Cross multiply
   280,281.76x = 386,788.72 × 152,957.35
4. Step 4: Simplify right side
   280,281.76x = 59,162,179,791.28
5. Step 5: Solve for x
   x = 59,162,179,791.28/280,281.76
6. Step 6: Final answer
   x = 211,081.09