Finding the Fourth Proportional to 638,258,896.29, 956,047,601.18 and 404,969,525.39

Step by Step Solution

1. Step 1: Write the proportion equation
   638,258,896.29 : 956,047,601.18 = 404,969,525.39 : x
2. Step 2: Convert to fraction form
   638,258,896.29/956,047,601.18 = 404,969,525.39/x
3. Step 3: Cross multiply
   638,258,896.29x = 956,047,601.18 × 404,969,525.39
4. Step 4: Simplify right side
   638,258,896.29x = 387,170,143,300,496,960
5. Step 5: Solve for x
   x = 387,170,143,300,496,960/638,258,896.29
6. Step 6: Final answer
   x = 606,603,598.56