Finding the Fourth Proportional to 446,851, 616,654.38 and 245,647

Step by Step Solution

1. Step 1: Write the proportion equation
   446,851 : 616,654.38 = 245,647 : x
2. Step 2: Convert to fraction form
   446,851/616,654.38 = 245,647/x
3. Step 3: Cross multiply
   446,851x = 616,654.38 × 245,647
4. Step 4: Simplify right side
   446,851x = 151,479,298,483.86
5. Step 5: Solve for x
   x = 151,479,298,483.86/446,851
6. Step 6: Final answer
   x = 338,992.86