Finding the Fourth Proportional to 374,483,183.89, 516,825,692.63 and 215,718,793.69

Step by Step Solution

1. Step 1: Write the proportion equation
   374,483,183.89 : 516,825,692.63 = 215,718,793.69 : x
2. Step 2: Convert to fraction form
   374,483,183.89/516,825,692.63 = 215,718,793.69/x
3. Step 3: Cross multiply
   374,483,183.89x = 516,825,692.63 × 215,718,793.69
4. Step 4: Simplify right side
   374,483,183.89x = 111,489,014,962,142,320
5. Step 5: Solve for x
   x = 111,489,014,962,142,320/374,483,183.89
6. Step 6: Final answer
   x = 297,714,342.75