Finding the Fourth Proportional to 208,892.89, 288,053.98 and 123,993.55

Step by Step Solution

1. Step 1: Write the proportion equation
   208,892.89 : 288,053.98 = 123,993.55 : x
2. Step 2: Convert to fraction form
   208,892.89/288,053.98 = 123,993.55/x
3. Step 3: Cross multiply
   208,892.89x = 288,053.98 × 123,993.55
4. Step 4: Simplify right side
   208,892.89x = 35,716,835,571.83
5. Step 5: Solve for x
   x = 35,716,835,571.83/208,892.89
6. Step 6: Final answer
   x = 170,981.58