Finding the Fourth Proportional to 172,287.89, 258,431.69 and 53,968.46

Step by Step Solution

1. Step 1: Write the proportion equation
   172,287.89 : 258,431.69 = 53,968.46 : x
2. Step 2: Convert to fraction form
   172,287.89/258,431.69 = 53,968.46/x
3. Step 3: Cross multiply
   172,287.89x = 258,431.69 × 53,968.46
4. Step 4: Simplify right side
   172,287.89x = 13,947,160,700.73
5. Step 5: Solve for x
   x = 13,947,160,700.73/172,287.89
6. Step 6: Final answer
   x = 80,952.65