Finding the Fourth Proportional to 171,806.30, 257,272.05 and 163,933.10

Step by Step Solution

1. Step 1: Write the proportion equation
   171,806.30 : 257,272.05 = 163,933.10 : x
2. Step 2: Convert to fraction form
   171,806.30/257,272.05 = 163,933.10/x
3. Step 3: Cross multiply
   171,806.30x = 257,272.05 × 163,933.10
4. Step 4: Simplify right side
   171,806.30x = 42,175,404,699.86
5. Step 5: Solve for x
   x = 42,175,404,699.86/171,806.30
6. Step 6: Final answer
   x = 245,482.29