Finding the Fourth Proportional to 131,242.72, 196,921.76 and 68,898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   131,242.72 : 196,921.76 = 68,898.72 : x
2. Step 2: Convert to fraction form
   131,242.72/196,921.76 = 68,898.72/x
3. Step 3: Cross multiply
   131,242.72x = 196,921.76 × 68,898.72
4. Step 4: Simplify right side
   131,242.72x = 13,567,657,204.15
5. Step 5: Solve for x
   x = 13,567,657,204.15/131,242.72
6. Step 6: Final answer
   x = 103,378.36