Finding the Fourth Proportional to 213,422.72, 294,584.70 and 140,878.56

Step by Step Solution

1. Step 1: Write the proportion equation
   213,422.72 : 294,584.70 = 140,878.56 : x
2. Step 2: Convert to fraction form
   213,422.72/294,584.70 = 140,878.56/x
3. Step 3: Cross multiply
   213,422.72x = 294,584.70 × 140,878.56
4. Step 4: Simplify right side
   213,422.72x = 41,500,667,253.39
5. Step 5: Solve for x
   x = 41,500,667,253.39/213,422.72
6. Step 6: Final answer
   x = 194,452.91