Finding the Fourth Proportional to 664,412,061.40, 996,975,027.78 and 276,502,327

Step by Step Solution

1. Step 1: Write the proportion equation
   664,412,061.40 : 996,975,027.78 = 276,502,327 : x
2. Step 2: Convert to fraction form
   664,412,061.40/996,975,027.78 = 276,502,327/x
3. Step 3: Cross multiply
   664,412,061.40x = 996,975,027.78 × 276,502,327
4. Step 4: Simplify right side
   664,412,061.40x = 275,665,915,142,059,648
5. Step 5: Solve for x
   x = 275,665,915,142,059,648/664,412,061.40
6. Step 6: Final answer
   x = 414,902,033.18