Finding the Fourth Proportional to 490,870.72, 677,392.57 and 273,078.33

Step by Step Solution

1. Step 1: Write the proportion equation
   490,870.72 : 677,392.57 = 273,078.33 : x
2. Step 2: Convert to fraction form
   490,870.72/677,392.57 = 273,078.33/x
3. Step 3: Cross multiply
   490,870.72x = 677,392.57 × 273,078.33
4. Step 4: Simplify right side
   490,870.72x = 184,981,231,770.01
5. Step 5: Solve for x
   x = 184,981,231,770.01/490,870.72
6. Step 6: Final answer
   x = 376,843.08