Finding the Fourth Proportional to 298,916, 412,512.72 and 164,788.64

Step by Step Solution

1. Step 1: Write the proportion equation
   298,916 : 412,512.72 = 164,788.64 : x
2. Step 2: Convert to fraction form
   298,916/412,512.72 = 164,788.64/x
3. Step 3: Cross multiply
   298,916x = 412,512.72 × 164,788.64
4. Step 4: Simplify right side
   298,916x = 67,977,410,111.50
5. Step 5: Solve for x
   x = 67,977,410,111.50/298,916
6. Step 6: Final answer
   x = 227,413.09