Finding the Fourth Proportional to 342,147.72, 472,143.57 and 189,173.91

Step by Step Solution

1. Step 1: Write the proportion equation
   342,147.72 : 472,143.57 = 189,173.91 : x
2. Step 2: Convert to fraction form
   342,147.72/472,143.57 = 189,173.91/x
3. Step 3: Cross multiply
   342,147.72x = 472,143.57 × 189,173.91
4. Step 4: Simplify right side
   342,147.72x = 89,317,243,093.76
5. Step 5: Solve for x
   x = 89,317,243,093.76/342,147.72
6. Step 6: Final answer
   x = 261,048.77