Finding the Fourth Proportional to 222,991.50, 307,728.27 and 122,395.98

Step by Step Solution

1. Step 1: Write the proportion equation
   222,991.50 : 307,728.27 = 122,395.98 : x
2. Step 2: Convert to fraction form
   222,991.50/307,728.27 = 122,395.98/x
3. Step 3: Cross multiply
   222,991.50x = 307,728.27 × 122,395.98
4. Step 4: Simplify right side
   222,991.50x = 37,664,703,180.35
5. Step 5: Solve for x
   x = 37,664,703,180.35/222,991.50
6. Step 6: Final answer
   x = 168,906.45