Finding the Fourth Proportional to 778,494,685.59, 1,074,325,512.24 and 421,262,464.05

Step by Step Solution

1. Step 1: Write the proportion equation
   778,494,685.59 : 1,074,325,512.24 = 421,262,464.05 : x
2. Step 2: Convert to fraction form
   778,494,685.59/1,074,325,512.24 = 421,262,464.05/x
3. Step 3: Cross multiply
   778,494,685.59x = 1,074,325,512.24 × 421,262,464.05
4. Step 4: Simplify right side
   778,494,685.59x = 452,573,012,478,000,832
5. Step 5: Solve for x
   x = 452,573,012,478,000,832/778,494,685.59
6. Step 6: Final answer
   x = 581,343,740.50