Finding the Fourth Proportional to 801,217,662.31, 1,105,686,865.94 and 443,991,405.98

Step by Step Solution

1. Step 1: Write the proportion equation
   801,217,662.31 : 1,105,686,865.94 = 443,991,405.98 : x
2. Step 2: Convert to fraction form
   801,217,662.31/1,105,686,865.94 = 443,991,405.98/x
3. Step 3: Cross multiply
   801,217,662.31x = 1,105,686,865.94 × 443,991,405.98
4. Step 4: Simplify right side
   801,217,662.31x = 490,915,466,182,864,640
5. Step 5: Solve for x
   x = 490,915,466,182,864,640/801,217,662.31
6. Step 6: Final answer
   x = 612,711,737.74