Finding the Fourth Proportional to 518,015, 777,066.51 and 144,038

Step by Step Solution

1. Step 1: Write the proportion equation
   518,015 : 777,066.51 = 144,038 : x
2. Step 2: Convert to fraction form
   518,015/777,066.51 = 144,038/x
3. Step 3: Cross multiply
   518,015x = 777,066.51 × 144,038
4. Step 4: Simplify right side
   518,015x = 111,927,105,967.38
5. Step 5: Solve for x
   x = 111,927,105,967.38/518,015
6. Step 6: Final answer
   x = 216,069.24