Finding the Fourth Proportional to 200,456.52, 276,564.91 and 136,683.60

Step by Step Solution

1. Step 1: Write the proportion equation
   200,456.52 : 276,564.91 = 136,683.60 : x
2. Step 2: Convert to fraction form
   200,456.52/276,564.91 = 136,683.60/x
3. Step 3: Cross multiply
   200,456.52x = 276,564.91 × 136,683.60
4. Step 4: Simplify right side
   200,456.52x = 37,801,887,532.48
5. Step 5: Solve for x
   x = 37,801,887,532.48/200,456.52
6. Step 6: Final answer
   x = 188,578.99