Finding the Fourth Proportional to 196,028.39, 270,477.93 and 128,144.82

Step by Step Solution

1. Step 1: Write the proportion equation
   196,028.39 : 270,477.93 = 128,144.82 : x
2. Step 2: Convert to fraction form
   196,028.39/270,477.93 = 128,144.82/x
3. Step 3: Cross multiply
   196,028.39x = 270,477.93 × 128,144.82
4. Step 4: Simplify right side
   196,028.39x = 34,660,345,653.82
5. Step 5: Solve for x
   x = 34,660,345,653.82/196,028.39
6. Step 6: Final answer
   x = 176,812.89