Finding the Fourth Proportional to 212,978.56, 293,923.84 and 122,363.52

Step by Step Solution

1. Step 1: Write the proportion equation
   212,978.56 : 293,923.84 = 122,363.52 : x
2. Step 2: Convert to fraction form
   212,978.56/293,923.84 = 122,363.52/x
3. Step 3: Cross multiply
   212,978.56x = 293,923.84 × 122,363.52
4. Step 4: Simplify right side
   212,978.56x = 35,965,555,674.32
5. Step 5: Solve for x
   x = 35,965,555,674.32/212,978.56
6. Step 6: Final answer
   x = 168,869.37