Finding the Fourth Proportional to 171,819.30, 257,291.55 and 163,946.10

Step by Step Solution

1. Step 1: Write the proportion equation
   171,819.30 : 257,291.55 = 163,946.10 : x
2. Step 2: Convert to fraction form
   171,819.30/257,291.55 = 163,946.10/x
3. Step 3: Cross multiply
   171,819.30x = 257,291.55 × 163,946.10
4. Step 4: Simplify right side
   171,819.30x = 42,181,946,185.46
5. Step 5: Solve for x
   x = 42,181,946,185.46/171,819.30
6. Step 6: Final answer
   x = 245,501.79