Finding the Fourth Proportional to 230,665.89, 318,267.30 and 173,443.05

Step by Step Solution

1. Step 1: Write the proportion equation
   230,665.89 : 318,267.30 = 173,443.05 : x
2. Step 2: Convert to fraction form
   230,665.89/318,267.30 = 173,443.05/x
3. Step 3: Cross multiply
   230,665.89x = 318,267.30 × 173,443.05
4. Step 4: Simplify right side
   230,665.89x = 55,201,251,227.27
5. Step 5: Solve for x
   x = 55,201,251,227.27/230,665.89
6. Step 6: Final answer
   x = 239,312.59