Finding the Fourth Proportional to 208,401.76, 287,594.72 and 112,908.46

Step by Step Solution

1. Step 1: Write the proportion equation
   208,401.76 : 287,594.72 = 112,908.46 : x
2. Step 2: Convert to fraction form
   208,401.76/287,594.72 = 112,908.46/x
3. Step 3: Cross multiply
   208,401.76x = 287,594.72 × 112,908.46
4. Step 4: Simplify right side
   208,401.76x = 32,471,874,936.82
5. Step 5: Solve for x
   x = 32,471,874,936.82/208,401.76
6. Step 6: Final answer
   x = 155,813.82