Finding the Fourth Proportional to 199,815.46, 275,749.30 and 109,177.05

Step by Step Solution

1. Step 1: Write the proportion equation
   199,815.46 : 275,749.30 = 109,177.05 : x
2. Step 2: Convert to fraction form
   199,815.46/275,749.30 = 109,177.05/x
3. Step 3: Cross multiply
   199,815.46x = 275,749.30 × 109,177.05
4. Step 4: Simplify right side
   199,815.46x = 30,105,494,118.89
5. Step 5: Solve for x
   x = 30,105,494,118.89/199,815.46
6. Step 6: Final answer
   x = 150,666.49