Finding the Fourth Proportional to 222,997.32, 307,736.48 and 121,022.78

Step by Step Solution

1. Step 1: Write the proportion equation
   222,997.32 : 307,736.48 = 121,022.78 : x
2. Step 2: Convert to fraction form
   222,997.32/307,736.48 = 121,022.78/x
3. Step 3: Cross multiply
   222,997.32x = 307,736.48 × 121,022.78
4. Step 4: Simplify right side
   222,997.32x = 37,243,123,080.89
5. Step 5: Solve for x
   x = 37,243,123,080.89/222,997.32
6. Step 6: Final answer
   x = 167,011.53