Finding the Fourth Proportional to 188,680, 260,165.82 and 145,561.36

Step by Step Solution

1. Step 1: Write the proportion equation
   188,680 : 260,165.82 = 145,561.36 : x
2. Step 2: Convert to fraction form
   188,680/260,165.82 = 145,561.36/x
3. Step 3: Cross multiply
   188,680x = 260,165.82 × 145,561.36
4. Step 4: Simplify right side
   188,680x = 37,870,090,584.72
5. Step 5: Solve for x
   x = 37,870,090,584.72/188,680
6. Step 6: Final answer
   x = 200,710.68