Finding the Fourth Proportional to 510,274,081.80, 764,789,292.98 and 264,495,216.42

Step by Step Solution

1. Step 1: Write the proportion equation
   510,274,081.80 : 764,789,292.98 = 264,495,216.42 : x
2. Step 2: Convert to fraction form
   510,274,081.80/764,789,292.98 = 264,495,216.42/x
3. Step 3: Cross multiply
   510,274,081.80x = 764,789,292.98 × 264,495,216.42
4. Step 4: Simplify right side
   510,274,081.80x = 202,283,109,562,443,872
5. Step 5: Solve for x
   x = 202,283,109,562,443,872/510,274,081.80
6. Step 6: Final answer
   x = 396,420,505.72