Finding the Fourth Proportional to 259,336.69, 357,870.83 and 144,627.12

Step by Step Solution

1. Step 1: Write the proportion equation
   259,336.69 : 357,870.83 = 144,627.12 : x
2. Step 2: Convert to fraction form
   259,336.69/357,870.83 = 144,627.12/x
3. Step 3: Cross multiply
   259,336.69x = 357,870.83 × 144,627.12
4. Step 4: Simplify right side
   259,336.69x = 51,757,826,751.77
5. Step 5: Solve for x
   x = 51,757,826,751.77/259,336.69
6. Step 6: Final answer
   x = 199,577.73