Finding the Fourth Proportional to 1,131,015,620.88, 1,560,815,920.72 and 622,436,889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,015,620.88 : 1,560,815,920.72 = 622,436,889.50 : x
2. Step 2: Convert to fraction form
   1,131,015,620.88/1,560,815,920.72 = 622,436,889.50/x
3. Step 3: Cross multiply
   1,131,015,620.88x = 1,560,815,920.72 × 622,436,889.50
4. Step 4: Simplify right side
   1,131,015,620.88x = 971,509,406,775,035,392
5. Step 5: Solve for x
   x = 971,509,406,775,035,392/1,131,015,620.88
6. Step 6: Final answer
   x = 858,970,812.46