Finding the Fourth Proportional to 799,837,851.42, 1,199,446,602.18 and 275,107,179.78

Step by Step Solution

1. Step 1: Write the proportion equation
   799,837,851.42 : 1,199,446,602.18 = 275,107,179.78 : x
2. Step 2: Convert to fraction form
   799,837,851.42/1,199,446,602.18 = 275,107,179.78/x
3. Step 3: Cross multiply
   799,837,851.42x = 1,199,446,602.18 × 275,107,179.78
4. Step 4: Simplify right side
   799,837,851.42x = 329,976,372,022,443,392
5. Step 5: Solve for x
   x = 329,976,372,022,443,392/799,837,851.42
6. Step 6: Final answer
   x = 412,554,083.85