Finding the Fourth Proportional to 585,082,062.72, 807,413,051.16 and 320,758,380.54

Step by Step Solution

1. Step 1: Write the proportion equation
   585,082,062.72 : 807,413,051.16 = 320,758,380.54 : x
2. Step 2: Convert to fraction form
   585,082,062.72/807,413,051.16 = 320,758,380.54/x
3. Step 3: Cross multiply
   585,082,062.72x = 807,413,051.16 × 320,758,380.54
4. Step 4: Simplify right side
   585,082,062.72x = 258,984,502,716,941,760
5. Step 5: Solve for x
   x = 258,984,502,716,941,760/585,082,062.72
6. Step 6: Final answer
   x = 442,646,458.02