Finding the Fourth Proportional to 172,258.25, 257,399.17 and 131,506.27

Step by Step Solution

1. Step 1: Write the proportion equation
   172,258.25 : 257,399.17 = 131,506.27 : x
2. Step 2: Convert to fraction form
   172,258.25/257,399.17 = 131,506.27/x
3. Step 3: Cross multiply
   172,258.25x = 257,399.17 × 131,506.27
4. Step 4: Simplify right side
   172,258.25x = 33,849,603,775.53
5. Step 5: Solve for x
   x = 33,849,603,775.53/172,258.25
6. Step 6: Final answer
   x = 196,504.98