Finding the Fourth Proportional to 280,468.82, 387,046.94 and 153,144.52

Step by Step Solution

1. Step 1: Write the proportion equation
   280,468.82 : 387,046.94 = 153,144.52 : x
2. Step 2: Convert to fraction form
   280,468.82/387,046.94 = 153,144.52/x
3. Step 3: Cross multiply
   280,468.82x = 387,046.94 × 153,144.52
4. Step 4: Simplify right side
   280,468.82x = 59,274,117,843.77
5. Step 5: Solve for x
   x = 59,274,117,843.77/280,468.82
6. Step 6: Final answer
   x = 211,339.42