Finding the Fourth Proportional to 599,105.69, 899,104.86 and 439,593.82

Step by Step Solution

1. Step 1: Write the proportion equation
   599,105.69 : 899,104.86 = 439,593.82 : x
2. Step 2: Convert to fraction form
   599,105.69/899,104.86 = 439,593.82/x
3. Step 3: Cross multiply
   599,105.69x = 899,104.86 × 439,593.82
4. Step 4: Simplify right side
   599,105.69x = 395,240,936,054.38
5. Step 5: Solve for x
   x = 395,240,936,054.38/599,105.69
6. Step 6: Final answer
   x = 659,718.21