Finding the Fourth Proportional to 199,803.89, 275,729.58 and 109,161.37

Step by Step Solution

1. Step 1: Write the proportion equation
   199,803.89 : 275,729.58 = 109,161.37 : x
2. Step 2: Convert to fraction form
   199,803.89/275,729.58 = 109,161.37/x
3. Step 3: Cross multiply
   199,803.89x = 275,729.58 × 109,161.37
4. Step 4: Simplify right side
   199,803.89x = 30,099,018,702.32
5. Step 5: Solve for x
   x = 30,099,018,702.32/199,803.89
6. Step 6: Final answer
   x = 150,642.81