Finding the Fourth Proportional to 339,141.72, 468,021.42 and 186,194.10

Step by Step Solution

1. Step 1: Write the proportion equation
   339,141.72 : 468,021.42 = 186,194.10 : x
2. Step 2: Convert to fraction form
   339,141.72/468,021.42 = 186,194.10/x
3. Step 3: Cross multiply
   339,141.72x = 468,021.42 × 186,194.10
4. Step 4: Simplify right side
   339,141.72x = 87,142,827,077.62
5. Step 5: Solve for x
   x = 87,142,827,077.62/339,141.72
6. Step 6: Final answer
   x = 256,951.07