Finding the Fourth Proportional to 208,089.86, 287,164.16 and 144,464.56

Step by Step Solution

1. Step 1: Write the proportion equation
   208,089.86 : 287,164.16 = 144,464.56 : x
2. Step 2: Convert to fraction form
   208,089.86/287,164.16 = 144,464.56/x
3. Step 3: Cross multiply
   208,089.86x = 287,164.16 × 144,464.56
4. Step 4: Simplify right side
   208,089.86x = 41,485,043,665.42
5. Step 5: Solve for x
   x = 41,485,043,665.42/208,089.86
6. Step 6: Final answer
   x = 199,361.20