Finding the Fourth Proportional to 342,322.92, 472,369.32 and 189,336.78

Step by Step Solution

1. Step 1: Write the proportion equation
   342,322.92 : 472,369.32 = 189,336.78 : x
2. Step 2: Convert to fraction form
   342,322.92/472,369.32 = 189,336.78/x
3. Step 3: Cross multiply
   342,322.92x = 472,369.32 × 189,336.78
4. Step 4: Simplify right side
   342,322.92x = 89,436,886,019.59
5. Step 5: Solve for x
   x = 89,436,886,019.59/342,322.92
6. Step 6: Final answer
   x = 261,264.67