Finding the Fourth Proportional to 1,123,731,772.88, 1,550,753,164.37 and 621,975,406.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,731,772.88 : 1,550,753,164.37 = 621,975,406.38 : x
2. Step 2: Convert to fraction form
   1,123,731,772.88/1,550,753,164.37 = 621,975,406.38/x
3. Step 3: Cross multiply
   1,123,731,772.88x = 1,550,753,164.37 × 621,975,406.38
4. Step 4: Simplify right side
   1,123,731,772.88x = 964,530,329,600,991,872
5. Step 5: Solve for x
   x = 964,530,329,600,991,872/1,123,731,772.88
6. Step 6: Final answer
   x = 858,327,897.18