Finding the Fourth Proportional to 494,404.95, 682,259.89 and 279,549.51

Step by Step Solution

1. Step 1: Write the proportion equation
   494,404.95 : 682,259.89 = 279,549.51 : x
2. Step 2: Convert to fraction form
   494,404.95/682,259.89 = 279,549.51/x
3. Step 3: Cross multiply
   494,404.95x = 682,259.89 × 279,549.51
4. Step 4: Simplify right side
   494,404.95x = 190,725,417,942.15
5. Step 5: Solve for x
   x = 190,725,417,942.15/494,404.95
6. Step 6: Final answer
   x = 385,767.61