Finding the Fourth Proportional to 199,413, 275,209.38 and 109,989

Step by Step Solution

1. Step 1: Write the proportion equation
   199,413 : 275,209.38 = 109,989 : x
2. Step 2: Convert to fraction form
   199,413/275,209.38 = 109,989/x
3. Step 3: Cross multiply
   199,413x = 275,209.38 × 109,989
4. Step 4: Simplify right side
   199,413x = 30,270,004,496.82
5. Step 5: Solve for x
   x = 30,270,004,496.82/199,413
6. Step 6: Final answer
   x = 151,795.54