Finding the Fourth Proportional to 131,013.72, 196,558.88 and 42,265.28

Step by Step Solution

1. Step 1: Write the proportion equation
   131,013.72 : 196,558.88 = 42,265.28 : x
2. Step 2: Convert to fraction form
   131,013.72/196,558.88 = 42,265.28/x
3. Step 3: Cross multiply
   131,013.72x = 196,558.88 × 42,265.28
4. Step 4: Simplify right side
   131,013.72x = 8,307,616,099.69
5. Step 5: Solve for x
   x = 8,307,616,099.69/131,013.72
6. Step 6: Final answer
   x = 63,410.28