Finding the Fourth Proportional to 236,111.94, 325,834.77 and 128,681.97

Step by Step Solution

1. Step 1: Write the proportion equation
   236,111.94 : 325,834.77 = 128,681.97 : x
2. Step 2: Convert to fraction form
   236,111.94/325,834.77 = 128,681.97/x
3. Step 3: Cross multiply
   236,111.94x = 325,834.77 × 128,681.97
4. Step 4: Simplify right side
   236,111.94x = 41,929,060,098.10
5. Step 5: Solve for x
   x = 41,929,060,098.10/236,111.94
6. Step 6: Final answer
   x = 177,581.28