Finding the Fourth Proportional to 300,000.69, 414,082.61 and 171,007.08

Step by Step Solution

1. Step 1: Write the proportion equation
   300,000.69 : 414,082.61 = 171,007.08 : x
2. Step 2: Convert to fraction form
   300,000.69/414,082.61 = 171,007.08/x
3. Step 3: Cross multiply
   300,000.69x = 414,082.61 × 171,007.08
4. Step 4: Simplify right side
   300,000.69x = 70,811,056,979.67
5. Step 5: Solve for x
   x = 70,811,056,979.67/300,000.69
6. Step 6: Final answer
   x = 236,036.31