Finding the Fourth Proportional to 208,081.49, 287,150.42 and 112,586.09

Step by Step Solution

1. Step 1: Write the proportion equation
   208,081.49 : 287,150.42 = 112,586.09 : x
2. Step 2: Convert to fraction form
   208,081.49/287,150.42 = 112,586.09/x
3. Step 3: Cross multiply
   208,081.49x = 287,150.42 × 112,586.09
4. Step 4: Simplify right side
   208,081.49x = 32,329,142,466.73
5. Step 5: Solve for x
   x = 32,329,142,466.73/208,081.49
6. Step 6: Final answer
   x = 155,367.70