Finding the Fourth Proportional to 322,180.56, 483,444.72 and 189,320.40

Step by Step Solution

1. Step 1: Write the proportion equation
   322,180.56 : 483,444.72 = 189,320.40 : x
2. Step 2: Convert to fraction form
   322,180.56/483,444.72 = 189,320.40/x
3. Step 3: Cross multiply
   322,180.56x = 483,444.72 × 189,320.40
4. Step 4: Simplify right side
   322,180.56x = 91,525,947,768.29
5. Step 5: Solve for x
   x = 91,525,947,768.29/322,180.56
6. Step 6: Final answer
   x = 284,082.78