Finding the Fourth Proportional to 221,078.57, 304,871.69 and 140,365.97

Step by Step Solution

1. Step 1: Write the proportion equation
   221,078.57 : 304,871.69 = 140,365.97 : x
2. Step 2: Convert to fraction form
   221,078.57/304,871.69 = 140,365.97/x
3. Step 3: Cross multiply
   221,078.57x = 304,871.69 × 140,365.97
4. Step 4: Simplify right side
   221,078.57x = 42,793,610,492.39
5. Step 5: Solve for x
   x = 42,793,610,492.39/221,078.57
6. Step 6: Final answer
   x = 193,567.43