Finding the Fourth Proportional to 323,598.89, 485,468.40 and 123,919.28

Step by Step Solution

1. Step 1: Write the proportion equation
   323,598.89 : 485,468.40 = 123,919.28 : x
2. Step 2: Convert to fraction form
   323,598.89/485,468.40 = 123,919.28/x
3. Step 3: Cross multiply
   323,598.89x = 485,468.40 × 123,919.28
4. Step 4: Simplify right side
   323,598.89x = 60,158,893,971.16
5. Step 5: Solve for x
   x = 60,158,893,971.16/323,598.89
6. Step 6: Final answer
   x = 185,905.75