Finding the Fourth Proportional to 222,540.50, 307,105.89 and 121,936.34

Step by Step Solution

1. Step 1: Write the proportion equation
   222,540.50 : 307,105.89 = 121,936.34 : x
2. Step 2: Convert to fraction form
   222,540.50/307,105.89 = 121,936.34/x
3. Step 3: Cross multiply
   222,540.50x = 307,105.89 × 121,936.34
4. Step 4: Simplify right side
   222,540.50x = 37,447,368,219.04
5. Step 5: Solve for x
   x = 37,447,368,219.04/222,540.50
6. Step 6: Final answer
   x = 168,272.15