Finding the Fourth Proportional to 406,665.02, 610,142.72 and 247,066.53

Step by Step Solution

1. Step 1: Write the proportion equation
   406,665.02 : 610,142.72 = 247,066.53 : x
2. Step 2: Convert to fraction form
   406,665.02/610,142.72 = 247,066.53/x
3. Step 3: Cross multiply
   406,665.02x = 610,142.72 × 247,066.53
4. Step 4: Simplify right side
   406,665.02x = 150,745,843,399.83
5. Step 5: Solve for x
   x = 150,745,843,399.83/406,665.02
6. Step 6: Final answer
   x = 370,688.01