Finding the Fourth Proportional to 3,931,608,757.83, 5,897,435,184.53 and 1,311,405,669.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931,608,757.83 : 5,897,435,184.53 = 1,311,405,669.55 : x
2. Step 2: Convert to fraction form
   3,931,608,757.83/5,897,435,184.53 = 1,311,405,669.55/x
3. Step 3: Cross multiply
   3,931,608,757.83x = 5,897,435,184.53 × 1,311,405,669.55
4. Step 4: Simplify right side
   3,931,608,757.83x = 7,733,929,936,789,734,400
5. Step 5: Solve for x
   x = 7,733,929,936,789,734,400/3,931,608,757.83
6. Step 6: Final answer
   x = 1,967,115,858.46