Finding the Fourth Proportional to 585,082,019.05, 807,412,991.47 and 320,758,336.82

Step by Step Solution

1. Step 1: Write the proportion equation
   585,082,019.05 : 807,412,991.47 = 320,758,336.82 : x
2. Step 2: Convert to fraction form
   585,082,019.05/807,412,991.47 = 320,758,336.82/x
3. Step 3: Cross multiply
   585,082,019.05x = 807,412,991.47 × 320,758,336.82
4. Step 4: Simplify right side
   585,082,019.05x = 258,984,448,270,778,048
5. Step 5: Solve for x
   x = 258,984,448,270,778,048/585,082,019.05
6. Step 6: Final answer
   x = 442,646,398.01