Finding the Fourth Proportional to 171,708.57, 257,546.43 and 105,114.42

Step by Step Solution

1. Step 1: Write the proportion equation
   171,708.57 : 257,546.43 = 105,114.42 : x
2. Step 2: Convert to fraction form
   171,708.57/257,546.43 = 105,114.42/x
3. Step 3: Cross multiply
   171,708.57x = 257,546.43 × 105,114.42
4. Step 4: Simplify right side
   171,708.57x = 27,071,843,612.52
5. Step 5: Solve for x
   x = 27,071,843,612.52/171,708.57
6. Step 6: Final answer
   x = 157,661.58