Finding the Fourth Proportional to 638,258,895.50, 956,047,599.98 and 404,969,524.60

Step by Step Solution

1. Step 1: Write the proportion equation
   638,258,895.50 : 956,047,599.98 = 404,969,524.60 : x
2. Step 2: Convert to fraction form
   638,258,895.50/956,047,599.98 = 404,969,524.60/x
3. Step 3: Cross multiply
   638,258,895.50x = 956,047,599.98 × 404,969,524.60
4. Step 4: Simplify right side
   638,258,895.50x = 387,170,142,057,493,888
5. Step 5: Solve for x
   x = 387,170,142,057,493,888/638,258,895.50
6. Step 6: Final answer
   x = 606,603,597.37