Finding the Fourth Proportional to 342,137.75, 472,141.71 and 189,171.91

Step by Step Solution

1. Step 1: Write the proportion equation
   342,137.75 : 472,141.71 = 189,171.91 : x
2. Step 2: Convert to fraction form
   342,137.75/472,141.71 = 189,171.91/x
3. Step 3: Cross multiply
   342,137.75x = 472,141.71 × 189,171.91
4. Step 4: Simplify right side
   342,137.75x = 89,315,947,891.01
5. Step 5: Solve for x
   x = 89,315,947,891.01/342,137.75
6. Step 6: Final answer
   x = 261,052.59