Finding the Fourth Proportional to 236,105.83, 325,816.53 and 128,673.55

Step by Step Solution

1. Step 1: Write the proportion equation
   236,105.83 : 325,816.53 = 128,673.55 : x
2. Step 2: Convert to fraction form
   236,105.83/325,816.53 = 128,673.55/x
3. Step 3: Cross multiply
   236,105.83x = 325,816.53 × 128,673.55
4. Step 4: Simplify right side
   236,105.83x = 41,923,967,934.70
5. Step 5: Solve for x
   x = 41,923,967,934.70/236,105.83
6. Step 6: Final answer
   x = 177,564.31