Finding the Fourth Proportional to 200,679.18, 276,949.72 and 111,255.18

Step by Step Solution

1. Step 1: Write the proportion equation
   200,679.18 : 276,949.72 = 111,255.18 : x
2. Step 2: Convert to fraction form
   200,679.18/276,949.72 = 111,255.18/x
3. Step 3: Cross multiply
   200,679.18x = 276,949.72 × 111,255.18
4. Step 4: Simplify right side
   200,679.18x = 30,812,090,949.55
5. Step 5: Solve for x
   x = 30,812,090,949.55/200,679.18
6. Step 6: Final answer
   x = 153,539.05