Finding the Fourth Proportional to 404,462,912.85, 558,544,305.42 and 382,428,055.89

Step by Step Solution

1. Step 1: Write the proportion equation
   404,462,912.85 : 558,544,305.42 = 382,428,055.89 : x
2. Step 2: Convert to fraction form
   404,462,912.85/558,544,305.42 = 382,428,055.89/x
3. Step 3: Cross multiply
   404,462,912.85x = 558,544,305.42 × 382,428,055.89
4. Step 4: Simplify right side
   404,462,912.85x = 213,603,012,850,200,960
5. Step 5: Solve for x
   x = 213,603,012,850,200,960/404,462,912.85
6. Step 6: Final answer
   x = 528,115,201.82