Finding the Fourth Proportional to 209,113.25, 288,554.59 and 123,067.08

Step by Step Solution

1. Step 1: Write the proportion equation
   209,113.25 : 288,554.59 = 123,067.08 : x
2. Step 2: Convert to fraction form
   209,113.25/288,554.59 = 123,067.08/x
3. Step 3: Cross multiply
   209,113.25x = 288,554.59 × 123,067.08
4. Step 4: Simplify right side
   209,113.25x = 35,511,570,273.48
5. Step 5: Solve for x
   x = 35,511,570,273.48/209,113.25
6. Step 6: Final answer
   x = 169,819.80