Finding the Fourth Proportional to 131,175.36, 196,908.72 and 67,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   131,175.36 : 196,908.72 = 67,978.56 : x
2. Step 2: Convert to fraction form
   131,175.36/196,908.72 = 67,978.56/x
3. Step 3: Cross multiply
   131,175.36x = 196,908.72 × 67,978.56
4. Step 4: Simplify right side
   131,175.36x = 13,385,571,237.04
5. Step 5: Solve for x
   x = 13,385,571,237.04/131,175.36
6. Step 6: Final answer
   x = 102,043.34