Finding the Fourth Proportional to 443,417,641.87, 611,628,018.38 and 284,395,884.42

Step by Step Solution

1. Step 1: Write the proportion equation
   443,417,641.87 : 611,628,018.38 = 284,395,884.42 : x
2. Step 2: Convert to fraction form
   443,417,641.87/611,628,018.38 = 284,395,884.42/x
3. Step 3: Cross multiply
   443,417,641.87x = 611,628,018.38 × 284,395,884.42
4. Step 4: Simplify right side
   443,417,641.87x = 173,944,491,221,810,144
5. Step 5: Solve for x
   x = 173,944,491,221,810,144/443,417,641.87
6. Step 6: Final answer
   x = 392,281,395.23