Finding the Fourth Proportional to 518,067, 777,144.51 and 144,090

Step by Step Solution

1. Step 1: Write the proportion equation
   518,067 : 777,144.51 = 144,090 : x
2. Step 2: Convert to fraction form
   518,067/777,144.51 = 144,090/x
3. Step 3: Cross multiply
   518,067x = 777,144.51 × 144,090
4. Step 4: Simplify right side
   518,067x = 111,978,752,445.90
5. Step 5: Solve for x
   x = 111,978,752,445.90/518,067
6. Step 6: Final answer
   x = 216,147.24