Finding the Fourth Proportional to 280,766.79, 387,484.89 and 153,461.52

Step by Step Solution

1. Step 1: Write the proportion equation
   280,766.79 : 387,484.89 = 153,461.52 : x
2. Step 2: Convert to fraction form
   280,766.79/387,484.89 = 153,461.52/x
3. Step 3: Cross multiply
   280,766.79x = 387,484.89 × 153,461.52
4. Step 4: Simplify right side
   280,766.79x = 59,464,020,196.43
5. Step 5: Solve for x
   x = 59,464,020,196.43/280,766.79
6. Step 6: Final answer
   x = 211,791.50