Finding the Fourth Proportional to 447,158.72, 617,066.16 and 245,954.72

Step by Step Solution

1. Step 1: Write the proportion equation
   447,158.72 : 617,066.16 = 245,954.72 : x
2. Step 2: Convert to fraction form
   447,158.72/617,066.16 = 245,954.72/x
3. Step 3: Cross multiply
   447,158.72x = 617,066.16 × 245,954.72
4. Step 4: Simplify right side
   447,158.72x = 151,770,334,604.28
5. Step 5: Solve for x
   x = 151,770,334,604.28/447,158.72
6. Step 6: Final answer
   x = 339,410.43