Finding the Fourth Proportional to 222,516.72, 307,080.72 and 121,914.72

Step by Step Solution

1. Step 1: Write the proportion equation
   222,516.72 : 307,080.72 = 121,914.72 : x
2. Step 2: Convert to fraction form
   222,516.72/307,080.72 = 121,914.72/x
3. Step 3: Cross multiply
   222,516.72x = 307,080.72 × 121,914.72
4. Step 4: Simplify right side
   222,516.72x = 37,437,659,996.20
5. Step 5: Solve for x
   x = 37,437,659,996.20/222,516.72
6. Step 6: Final answer
   x = 168,246.50