Finding the Fourth Proportional to 200,808, 277,128 and 111,384

Step by Step Solution

1. Step 1: Write the proportion equation
   200,808 : 277,128 = 111,384 : x
2. Step 2: Convert to fraction form
   200,808/277,128 = 111,384/x
3. Step 3: Cross multiply
   200,808x = 277,128 × 111,384
4. Step 4: Simplify right side
   200,808x = 30,867,625,152
5. Step 5: Solve for x
   x = 30,867,625,152/200,808
6. Step 6: Final answer
   x = 153,717.11