Finding the Fourth Proportional to 208,300.52, 287,145.06 and 163,510.76

Step by Step Solution

1. Step 1: Write the proportion equation
   208,300.52 : 287,145.06 = 163,510.76 : x
2. Step 2: Convert to fraction form
   208,300.52/287,145.06 = 163,510.76/x
3. Step 3: Cross multiply
   208,300.52x = 287,145.06 × 163,510.76
4. Step 4: Simplify right side
   208,300.52x = 46,951,306,990.85
5. Step 5: Solve for x
   x = 46,951,306,990.85/208,300.52
6. Step 6: Final answer
   x = 225,401.78