Finding the Fourth Proportional to 1,392,362,396.69, 1,921,959,903.81 and 827,845,931.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,362,396.69 : 1,921,959,903.81 = 827,845,931.60 : x
2. Step 2: Convert to fraction form
   1,392,362,396.69/1,921,959,903.81 = 827,845,931.60/x
3. Step 3: Cross multiply
   1,392,362,396.69x = 1,921,959,903.81 × 827,845,931.60
4. Step 4: Simplify right side
   1,392,362,396.69x = 1,591,086,687,057,826,048
5. Step 5: Solve for x
   x = 1,591,086,687,057,826,048/1,392,362,396.69
6. Step 6: Final answer
   x = 1,142,724,545.60