Finding the Fourth Proportional to 159,802.10, 239,789.55 and 71,069.30

Step by Step Solution

1. Step 1: Write the proportion equation
   159,802.10 : 239,789.55 = 71,069.30 : x
2. Step 2: Convert to fraction form
   159,802.10/239,789.55 = 71,069.30/x
3. Step 3: Cross multiply
   159,802.10x = 239,789.55 × 71,069.30
4. Step 4: Simplify right side
   159,802.10x = 17,041,675,465.82
5. Step 5: Solve for x
   x = 17,041,675,465.82/159,802.10
6. Step 6: Final answer
   x = 106,642.37