Finding the Fourth Proportional to 1,978,876,569.96, 2,968,312,348.24 and 505,016,412.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,876,569.96 : 2,968,312,348.24 = 505,016,412.05 : x
2. Step 2: Convert to fraction form
   1,978,876,569.96/2,968,312,348.24 = 505,016,412.05/x
3. Step 3: Cross multiply
   1,978,876,569.96x = 2,968,312,348.24 × 505,016,412.05
4. Step 4: Simplify right side
   1,978,876,569.96x = 1,499,046,451,958,033,408
5. Step 5: Solve for x
   x = 1,499,046,451,958,033,408/1,978,876,569.96
6. Step 6: Final answer
   x = 757,523,978.36