Finding the Fourth Proportional to 294,275.50, 406,101.81 and 160,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,275.50 : 406,101.81 = 160,139.50 : x
2. Step 2: Convert to fraction form
   294,275.50/406,101.81 = 160,139.50/x
3. Step 3: Cross multiply
   294,275.50x = 406,101.81 × 160,139.50
4. Step 4: Simplify right side
   294,275.50x = 65,032,940,802.50
5. Step 5: Solve for x
   x = 65,032,940,802.50/294,275.50
6. Step 6: Final answer
   x = 220,993.39