Finding the Fourth Proportional to 494,196.30, 682,002.72 and 279,337.19

Step by Step Solution

1. Step 1: Write the proportion equation
   494,196.30 : 682,002.72 = 279,337.19 : x
2. Step 2: Convert to fraction form
   494,196.30/682,002.72 = 279,337.19/x
3. Step 3: Cross multiply
   494,196.30x = 682,002.72 × 279,337.19
4. Step 4: Simplify right side
   494,196.30x = 190,508,723,377.16
5. Step 5: Solve for x
   x = 190,508,723,377.16/494,196.30
6. Step 6: Final answer
   x = 385,492.01