Finding the Fourth Proportional to 171,697, 237,019.46 and 108,128.20

Step by Step Solution

1. Step 1: Write the proportion equation
   171,697 : 237,019.46 = 108,128.20 : x
2. Step 2: Convert to fraction form
   171,697/237,019.46 = 108,128.20/x
3. Step 3: Cross multiply
   171,697x = 237,019.46 × 108,128.20
4. Step 4: Simplify right side
   171,697x = 25,628,487,574.77
5. Step 5: Solve for x
   x = 25,628,487,574.77/171,697
6. Step 6: Final answer
   x = 149,265.79