Finding the Fourth Proportional to 171,978.58, 257,604.45 and 108,766.18

Step by Step Solution

1. Step 1: Write the proportion equation
   171,978.58 : 257,604.45 = 108,766.18 : x
2. Step 2: Convert to fraction form
   171,978.58/257,604.45 = 108,766.18/x
3. Step 3: Cross multiply
   171,978.58x = 257,604.45 × 108,766.18
4. Step 4: Simplify right side
   171,978.58x = 28,018,651,977.50
5. Step 5: Solve for x
   x = 28,018,651,977.50/171,978.58
6. Step 6: Final answer
   x = 162,919.43