Finding the Fourth Proportional to 199,818.89, 275,746.82 and 109,172.91

Step by Step Solution

1. Step 1: Write the proportion equation
   199,818.89 : 275,746.82 = 109,172.91 : x
2. Step 2: Convert to fraction form
   199,818.89/275,746.82 = 109,172.91/x
3. Step 3: Cross multiply
   199,818.89x = 275,746.82 × 109,172.91
4. Step 4: Simplify right side
   199,818.89x = 30,104,082,216.78
5. Step 5: Solve for x
   x = 30,104,082,216.78/199,818.89
6. Step 6: Final answer
   x = 150,656.84