Finding the Fourth Proportional to 222,467.69, 307,003.55 and 120,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   222,467.69 : 307,003.55 = 120,490.78 : x
2. Step 2: Convert to fraction form
   222,467.69/307,003.55 = 120,490.78/x
3. Step 3: Cross multiply
   222,467.69x = 307,003.55 × 120,490.78
4. Step 4: Simplify right side
   222,467.69x = 36,991,095,832.31
5. Step 5: Solve for x
   x = 36,991,095,832.31/222,467.69
6. Step 6: Final answer
   x = 166,276.27