Finding the Fourth Proportional to 342,638.32, 472,835.15 and 189,673.27

Step by Step Solution

1. Step 1: Write the proportion equation
   342,638.32 : 472,835.15 = 189,673.27 : x
2. Step 2: Convert to fraction form
   342,638.32/472,835.15 = 189,673.27/x
3. Step 3: Cross multiply
   342,638.32x = 472,835.15 × 189,673.27
4. Step 4: Simplify right side
   342,638.32x = 89,684,189,648.93
5. Step 5: Solve for x
   x = 89,684,189,648.93/342,638.32
6. Step 6: Final answer
   x = 261,745.95