Finding the Fourth Proportional to 172,693.37, 259,067.76 and 72,868.27

Step by Step Solution

1. Step 1: Write the proportion equation
   172,693.37 : 259,067.76 = 72,868.27 : x
2. Step 2: Convert to fraction form
   172,693.37/259,067.76 = 72,868.27/x
3. Step 3: Cross multiply
   172,693.37x = 259,067.76 × 72,868.27
4. Step 4: Simplify right side
   172,693.37x = 18,877,818,563.05
5. Step 5: Solve for x
   x = 18,877,818,563.05/172,693.37
6. Step 6: Final answer
   x = 109,314.09