Finding the Fourth Proportional to 804,763,078.72, 1,207,613,073.56 and 338,390,752.48

Step by Step Solution

1. Step 1: Write the proportion equation
   804,763,078.72 : 1,207,613,073.56 = 338,390,752.48 : x
2. Step 2: Convert to fraction form
   804,763,078.72/1,207,613,073.56 = 338,390,752.48/x
3. Step 3: Cross multiply
   804,763,078.72x = 1,207,613,073.56 × 338,390,752.48
4. Step 4: Simplify right side
   804,763,078.72x = 408,645,096,666,654,016
5. Step 5: Solve for x
   x = 408,645,096,666,654,016/804,763,078.72
6. Step 6: Final answer
   x = 507,783,107.19