Finding the Fourth Proportional to 1,536,789,019.58, 2,120,769,531.72 and 831,940,978.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,536,789,019.58 : 2,120,769,531.72 = 831,940,978.22 : x
2. Step 2: Convert to fraction form
   1,536,789,019.58/2,120,769,531.72 = 831,940,978.22/x
3. Step 3: Cross multiply
   1,536,789,019.58x = 2,120,769,531.72 × 831,940,978.22
4. Step 4: Simplify right side
   1,536,789,019.58x = 1,764,355,078,798,308,096
5. Step 5: Solve for x
   x = 1,764,355,078,798,308,096/1,536,789,019.58
6. Step 6: Final answer
   x = 1,148,078,920.61