Finding the Fourth Proportional to 223,222.50, 308,067.71 and 122,639.94

Step by Step Solution

1. Step 1: Write the proportion equation
   223,222.50 : 308,067.71 = 122,639.94 : x
2. Step 2: Convert to fraction form
   223,222.50/308,067.71 = 122,639.94/x
3. Step 3: Cross multiply
   223,222.50x = 308,067.71 × 122,639.94
4. Step 4: Simplify right side
   223,222.50x = 37,781,404,857.14
5. Step 5: Solve for x
   x = 37,781,404,857.14/223,222.50
6. Step 6: Final answer
   x = 169,254.47