Finding the Fourth Proportional to 300,528.18, 451,020.78 and 111,167.64

Step by Step Solution

1. Step 1: Write the proportion equation
   300,528.18 : 451,020.78 = 111,167.64 : x
2. Step 2: Convert to fraction form
   300,528.18/451,020.78 = 111,167.64/x
3. Step 3: Cross multiply
   300,528.18x = 451,020.78 × 111,167.64
4. Step 4: Simplify right side
   300,528.18x = 50,138,915,703.56
5. Step 5: Solve for x
   x = 50,138,915,703.56/300,528.18
6. Step 6: Final answer
   x = 166,835.99