Finding the Fourth Proportional to 2,085,456,008.30, 3,128,603,916.45 and 611,592,968.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085,456,008.30 : 3,128,603,916.45 = 611,592,968.30 : x
2. Step 2: Convert to fraction form
   2,085,456,008.30/3,128,603,916.45 = 611,592,968.30/x
3. Step 3: Cross multiply
   2,085,456,008.30x = 3,128,603,916.45 × 611,592,968.30
4. Step 4: Simplify right side
   2,085,456,008.30x = 1,913,432,155,896,660,480
5. Step 5: Solve for x
   x = 1,913,432,155,896,660,480/2,085,456,008.30
6. Step 6: Final answer
   x = 917,512,595.94