Finding the Fourth Proportional to 131,019.36, 196,567.31 and 42,270.90

Step by Step Solution

1. Step 1: Write the proportion equation
   131,019.36 : 196,567.31 = 42,270.90 : x
2. Step 2: Convert to fraction form
   131,019.36/196,567.31 = 42,270.90/x
3. Step 3: Cross multiply
   131,019.36x = 196,567.31 × 42,270.90
4. Step 4: Simplify right side
   131,019.36x = 8,309,077,104.28
5. Step 5: Solve for x
   x = 8,309,077,104.28/131,019.36
6. Step 6: Final answer
   x = 63,418.70