Finding the Fourth Proportional to 1,123,731,771.38, 1,550,753,162.30 and 621,975,404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,731,771.38 : 1,550,753,162.30 = 621,975,404.88 : x
2. Step 2: Convert to fraction form
   1,123,731,771.38/1,550,753,162.30 = 621,975,404.88/x
3. Step 3: Cross multiply
   1,123,731,771.38x = 1,550,753,162.30 × 621,975,404.88
4. Step 4: Simplify right side
   1,123,731,771.38x = 964,530,325,987,373,056
5. Step 5: Solve for x
   x = 964,530,325,987,373,056/1,123,731,771.38
6. Step 6: Final answer
   x = 858,327,895.11