Finding the Fourth Proportional to 199,818.57, 275,746.41 and 109,172.59

Step by Step Solution

1. Step 1: Write the proportion equation
   199,818.57 : 275,746.41 = 109,172.59 : x
2. Step 2: Convert to fraction form
   199,818.57/275,746.41 = 109,172.59/x
3. Step 3: Cross multiply
   199,818.57x = 275,746.41 × 109,172.59
4. Step 4: Simplify right side
   199,818.57x = 30,103,949,762.90
5. Step 5: Solve for x
   x = 30,103,949,762.90/199,818.57
6. Step 6: Final answer
   x = 150,656.42