Finding the Fourth Proportional to 236,275.23, 326,059.89 and 128,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,275.23 : 326,059.89 = 128,842.50 : x
2. Step 2: Convert to fraction form
   236,275.23/326,059.89 = 128,842.50/x
3. Step 3: Cross multiply
   236,275.23x = 326,059.89 × 128,842.50
4. Step 4: Simplify right side
   236,275.23x = 42,010,371,377.33
5. Step 5: Solve for x
   x = 42,010,371,377.33/236,275.23
6. Step 6: Final answer
   x = 177,802.69