Finding the Fourth Proportional to 188,290.72, 259,845.72 and 103,409.62

Step by Step Solution

1. Step 1: Write the proportion equation
   188,290.72 : 259,845.72 = 103,409.62 : x
2. Step 2: Convert to fraction form
   188,290.72/259,845.72 = 103,409.62/x
3. Step 3: Cross multiply
   188,290.72x = 259,845.72 × 103,409.62
4. Step 4: Simplify right side
   188,290.72x = 26,870,547,163.83
5. Step 5: Solve for x
   x = 26,870,547,163.83/188,290.72
6. Step 6: Final answer
   x = 142,707.76