Finding the Fourth Proportional to 131,142.89, 196,709.67 and 42,394.07

Step by Step Solution

1. Step 1: Write the proportion equation
   131,142.89 : 196,709.67 = 42,394.07 : x
2. Step 2: Convert to fraction form
   131,142.89/196,709.67 = 42,394.07/x
3. Step 3: Cross multiply
   131,142.89x = 196,709.67 × 42,394.07
4. Step 4: Simplify right side
   131,142.89x = 8,339,324,011.43
5. Step 5: Solve for x
   x = 8,339,324,011.43/131,142.89
6. Step 6: Final answer
   x = 63,589.60