Finding the Fourth Proportional to 294,381, 406,245.78 and 160,245

Step by Step Solution

1. Step 1: Write the proportion equation
   294,381 : 406,245.78 = 160,245 : x
2. Step 2: Convert to fraction form
   294,381/406,245.78 = 160,245/x
3. Step 3: Cross multiply
   294,381x = 406,245.78 × 160,245
4. Step 4: Simplify right side
   294,381x = 65,098,855,016.10
5. Step 5: Solve for x
   x = 65,098,855,016.10/294,381
6. Step 6: Final answer
   x = 221,138.10