Finding the Fourth Proportional to 209,061.66, 288,505.85 and 123,023.97

Step by Step Solution

1. Step 1: Write the proportion equation
   209,061.66 : 288,505.85 = 123,023.97 : x
2. Step 2: Convert to fraction form
   209,061.66/288,505.85 = 123,023.97/x
3. Step 3: Cross multiply
   209,061.66x = 288,505.85 × 123,023.97
4. Step 4: Simplify right side
   209,061.66x = 35,493,134,420.10
5. Step 5: Solve for x
   x = 35,493,134,420.10/209,061.66
6. Step 6: Final answer
   x = 169,773.52