Finding the Fourth Proportional to 199,786.64, 275,701.01 and 109,143

Step by Step Solution

1. Step 1: Write the proportion equation
   199,786.64 : 275,701.01 = 109,143 : x
2. Step 2: Convert to fraction form
   199,786.64/275,701.01 = 109,143/x
3. Step 3: Cross multiply
   199,786.64x = 275,701.01 × 109,143
4. Step 4: Simplify right side
   199,786.64x = 30,090,834,788.72
5. Step 5: Solve for x
   x = 30,090,834,788.72/199,786.64
6. Step 6: Final answer
   x = 150,614.85