Finding the Fourth Proportional to 485,410.48, 728,443.62 and 169,870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   485,410.48 : 728,443.62 = 169,870.12 : x
2. Step 2: Convert to fraction form
   485,410.48/728,443.62 = 169,870.12/x
3. Step 3: Cross multiply
   485,410.48x = 728,443.62 × 169,870.12
4. Step 4: Simplify right side
   485,410.48x = 123,740,805,142.63
5. Step 5: Solve for x
   x = 123,740,805,142.63/485,410.48
6. Step 6: Final answer
   x = 254,919.93