Finding the Fourth Proportional to 1,561,931,362.98, 2,155,459,367.88 and 857,095,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561,931,362.98 : 2,155,459,367.88 = 857,095,139.52 : x
2. Step 2: Convert to fraction form
   1,561,931,362.98/2,155,459,367.88 = 857,095,139.52/x
3. Step 3: Cross multiply
   1,561,931,362.98x = 2,155,459,367.88 × 857,095,139.52
4. Step 4: Simplify right side
   1,561,931,362.98x = 1,847,433,747,642,799,616
5. Step 5: Solve for x
   x = 1,847,433,747,642,799,616/1,561,931,362.98
6. Step 6: Final answer
   x = 1,182,788,047.82