Finding the Fourth Proportional to 354,429.39, 489,113.38 and 201,468.59

Step by Step Solution

1. Step 1: Write the proportion equation
   354,429.39 : 489,113.38 = 201,468.59 : x
2. Step 2: Convert to fraction form
   354,429.39/489,113.38 = 201,468.59/x
3. Step 3: Cross multiply
   354,429.39x = 489,113.38 × 201,468.59
4. Step 4: Simplify right side
   354,429.39x = 98,540,983,018.73
5. Step 5: Solve for x
   x = 98,540,983,018.73/354,429.39
6. Step 6: Final answer
   x = 278,027.12