Finding the Fourth Proportional to 323,618.87, 485,498.37 and 123,939.29

Step by Step Solution

1. Step 1: Write the proportion equation
   323,618.87 : 485,498.37 = 123,939.29 : x
2. Step 2: Convert to fraction form
   323,618.87/485,498.37 = 123,939.29/x
3. Step 3: Cross multiply
   323,618.87x = 485,498.37 × 123,939.29
4. Step 4: Simplify right side
   323,618.87x = 60,172,323,273.96
5. Step 5: Solve for x
   x = 60,172,323,273.96/323,618.87
6. Step 6: Final answer
   x = 185,935.77