Finding the Fourth Proportional to 199,113.69, 274,776.78 and 109,689.69

Step by Step Solution

1. Step 1: Write the proportion equation
   199,113.69 : 274,776.78 = 109,689.69 : x
2. Step 2: Convert to fraction form
   199,113.69/274,776.78 = 109,689.69/x
3. Step 3: Cross multiply
   199,113.69x = 274,776.78 × 109,689.69
4. Step 4: Simplify right side
   199,113.69x = 30,140,179,817.40
5. Step 5: Solve for x
   x = 30,140,179,817.40/199,113.69
6. Step 6: Final answer
   x = 151,371.71