Finding the Fourth Proportional to 342,046.48, 472,020.72 and 191,143.48

Step by Step Solution

1. Step 1: Write the proportion equation
   342,046.48 : 472,020.72 = 191,143.48 : x
2. Step 2: Convert to fraction form
   342,046.48/472,020.72 = 191,143.48/x
3. Step 3: Cross multiply
   342,046.48x = 472,020.72 × 191,143.48
4. Step 4: Simplify right side
   342,046.48x = 90,223,683,052.91
5. Step 5: Solve for x
   x = 90,223,683,052.91/342,046.48
6. Step 6: Final answer
   x = 263,776.09