Finding the Fourth Proportional to 222,638.69, 307,245.15 and 120,667.46

Step by Step Solution

1. Step 1: Write the proportion equation
   222,638.69 : 307,245.15 = 120,667.46 : x
2. Step 2: Convert to fraction form
   222,638.69/307,245.15 = 120,667.46/x
3. Step 3: Cross multiply
   222,638.69x = 307,245.15 × 120,667.46
4. Step 4: Simplify right side
   222,638.69x = 37,074,490,311.59
5. Step 5: Solve for x
   x = 37,074,490,311.59/222,638.69
6. Step 6: Final answer
   x = 166,523.12