Finding the Fourth Proportional to 209,104.96, 288,570.72 and 123,070

Step by Step Solution

1. Step 1: Write the proportion equation
   209,104.96 : 288,570.72 = 123,070 : x
2. Step 2: Convert to fraction form
   209,104.96/288,570.72 = 123,070/x
3. Step 3: Cross multiply
   209,104.96x = 288,570.72 × 123,070
4. Step 4: Simplify right side
   209,104.96x = 35,514,398,510.40
5. Step 5: Solve for x
   x = 35,514,398,510.40/209,104.96
6. Step 6: Final answer
   x = 169,840.06