Finding the Fourth Proportional to 208,790.29, 288,137.00 and 122,733.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,790.29 : 288,137.00 = 122,733.50 : x
2. Step 2: Convert to fraction form
   208,790.29/288,137.00 = 122,733.50/x
3. Step 3: Cross multiply
   208,790.29x = 288,137.00 × 122,733.50
4. Step 4: Simplify right side
   208,790.29x = 35,364,060,665.27
5. Step 5: Solve for x
   x = 35,364,060,665.27/208,790.29
6. Step 6: Final answer
   x = 169,375.98