Finding the Fourth Proportional to 209,100.96, 288,565.20 and 123,066

Step by Step Solution

1. Step 1: Write the proportion equation
   209,100.96 : 288,565.20 = 123,066 : x
2. Step 2: Convert to fraction form
   209,100.96/288,565.20 = 123,066/x
3. Step 3: Cross multiply
   209,100.96x = 288,565.20 × 123,066
4. Step 4: Simplify right side
   209,100.96x = 35,512,564,903.20
5. Step 5: Solve for x
   x = 35,512,564,903.20/209,100.96
6. Step 6: Final answer
   x = 169,834.54