Finding the Fourth Proportional to 154,146.42, 231,216.12 and 71,040.42

Step by Step Solution

1. Step 1: Write the proportion equation
   154,146.42 : 231,216.12 = 71,040.42 : x
2. Step 2: Convert to fraction form
   154,146.42/231,216.12 = 71,040.42/x
3. Step 3: Cross multiply
   154,146.42x = 231,216.12 × 71,040.42
4. Step 4: Simplify right side
   154,146.42x = 16,425,690,275.57
5. Step 5: Solve for x
   x = 16,425,690,275.57/154,146.42
6. Step 6: Final answer
   x = 106,559.01