Finding the Fourth Proportional to 259,150.67, 357,656.96 and 144,439.79

Step by Step Solution

1. Step 1: Write the proportion equation
   259,150.67 : 357,656.96 = 144,439.79 : x
2. Step 2: Convert to fraction form
   259,150.67/357,656.96 = 144,439.79/x
3. Step 3: Cross multiply
   259,150.67x = 357,656.96 × 144,439.79
4. Step 4: Simplify right side
   259,150.67x = 51,659,895,300.30
5. Step 5: Solve for x
   x = 51,659,895,300.30/259,150.67
6. Step 6: Final answer
   x = 199,343.09