Finding the Fourth Proportional to 208,653.84, 287,940.72 and 113,160.72

Step by Step Solution

1. Step 1: Write the proportion equation
   208,653.84 : 287,940.72 = 113,160.72 : x
2. Step 2: Convert to fraction form
   208,653.84/287,940.72 = 113,160.72/x
3. Step 3: Cross multiply
   208,653.84x = 287,940.72 × 113,160.72
4. Step 4: Simplify right side
   208,653.84x = 32,583,579,192.52
5. Step 5: Solve for x
   x = 32,583,579,192.52/208,653.84
6. Step 6: Final answer
   x = 156,160.94