Finding the Fourth Proportional to 716,400,819.86, 1,074,802,783.71 and 256,404,385.94

Step by Step Solution

1. Step 1: Write the proportion equation
   716,400,819.86 : 1,074,802,783.71 = 256,404,385.94 : x
2. Step 2: Convert to fraction form
   716,400,819.86/1,074,802,783.71 = 256,404,385.94/x
3. Step 3: Cross multiply
   716,400,819.86x = 1,074,802,783.71 × 256,404,385.94
4. Step 4: Simplify right side
   716,400,819.86x = 275,584,147,763,765,184
5. Step 5: Solve for x
   x = 275,584,147,763,765,184/716,400,819.86
6. Step 6: Final answer
   x = 384,678,716.33