Finding the Fourth Proportional to 209,103.96, 288,569.34 and 123,069

Step by Step Solution

1. Step 1: Write the proportion equation
   209,103.96 : 288,569.34 = 123,069 : x
2. Step 2: Convert to fraction form
   209,103.96/288,569.34 = 123,069/x
3. Step 3: Cross multiply
   209,103.96x = 288,569.34 × 123,069
4. Step 4: Simplify right side
   209,103.96x = 35,513,940,104.46
5. Step 5: Solve for x
   x = 35,513,940,104.46/209,103.96
6. Step 6: Final answer
   x = 169,838.68