Finding the Fourth Proportional to 1,568,598,655.50, 2,164,666,139.73 and 863,748,957.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568,598,655.50 : 2,164,666,139.73 = 863,748,957.78 : x
2. Step 2: Convert to fraction form
   1,568,598,655.50/2,164,666,139.73 = 863,748,957.78/x
3. Step 3: Cross multiply
   1,568,598,655.50x = 2,164,666,139.73 × 863,748,957.78
4. Step 4: Simplify right side
   1,568,598,655.50x = 1,869,728,122,133,443,328
5. Step 5: Solve for x
   x = 1,869,728,122,133,443,328/1,568,598,655.50
6. Step 6: Final answer
   x = 1,191,973,559.06