Finding the Fourth Proportional to 200,380.10, 300,579.50 and 111,566.72

Step by Step Solution

1. Step 1: Write the proportion equation
   200,380.10 : 300,579.50 = 111,566.72 : x
2. Step 2: Convert to fraction form
   200,380.10/300,579.50 = 111,566.72/x
3. Step 3: Cross multiply
   200,380.10x = 300,579.50 × 111,566.72
4. Step 4: Simplify right side
   200,380.10x = 33,534,667,469.39
5. Step 5: Solve for x
   x = 33,534,667,469.39/200,380.10
6. Step 6: Final answer
   x = 167,355.28