Finding the Fourth Proportional to 199,978.64, 275,970.67 and 109,333.16

Step by Step Solution

1. Step 1: Write the proportion equation
   199,978.64 : 275,970.67 = 109,333.16 : x
2. Step 2: Convert to fraction form
   199,978.64/275,970.67 = 109,333.16/x
3. Step 3: Cross multiply
   199,978.64x = 275,970.67 × 109,333.16
4. Step 4: Simplify right side
   199,978.64x = 30,172,745,418.42
5. Step 5: Solve for x
   x = 30,172,745,418.42/199,978.64
6. Step 6: Final answer
   x = 150,879.84