Finding the Fourth Proportional to 300,185.59, 414,215.53 and 171,140.71

Step by Step Solution

1. Step 1: Write the proportion equation
   300,185.59 : 414,215.53 = 171,140.71 : x
2. Step 2: Convert to fraction form
   300,185.59/414,215.53 = 171,140.71/x
3. Step 3: Cross multiply
   300,185.59x = 414,215.53 × 171,140.71
4. Step 4: Simplify right side
   300,185.59x = 70,889,139,897.23
5. Step 5: Solve for x
   x = 70,889,139,897.23/300,185.59
6. Step 6: Final answer
   x = 236,151.04