Finding the Fourth Proportional to 221,667.42, 305,901 and 121,065.42

Step by Step Solution

1. Step 1: Write the proportion equation
   221,667.42 : 305,901 = 121,065.42 : x
2. Step 2: Convert to fraction form
   221,667.42/305,901 = 121,065.42/x
3. Step 3: Cross multiply
   221,667.42x = 305,901 × 121,065.42
4. Step 4: Simplify right side
   221,667.42x = 37,034,033,043.42
5. Step 5: Solve for x
   x = 37,034,033,043.42/221,667.42
6. Step 6: Final answer
   x = 167,070.26