Finding the Fourth Proportional to 492,667.32, 738,249.30 and 256,086.84

Step by Step Solution

1. Step 1: Write the proportion equation
   492,667.32 : 738,249.30 = 256,086.84 : x
2. Step 2: Convert to fraction form
   492,667.32/738,249.30 = 256,086.84/x
3. Step 3: Cross multiply
   492,667.32x = 738,249.30 × 256,086.84
4. Step 4: Simplify right side
   492,667.32x = 189,055,930,369.21
5. Step 5: Solve for x
   x = 189,055,930,369.21/492,667.32
6. Step 6: Final answer
   x = 383,739.54