Finding the Fourth Proportional to 131,179.68, 196,769.50 and 72,389.02

Step by Step Solution

1. Step 1: Write the proportion equation
   131,179.68 : 196,769.50 = 72,389.02 : x
2. Step 2: Convert to fraction form
   131,179.68/196,769.50 = 72,389.02/x
3. Step 3: Cross multiply
   131,179.68x = 196,769.50 × 72,389.02
4. Step 4: Simplify right side
   131,179.68x = 14,243,951,270.89
5. Step 5: Solve for x
   x = 14,243,951,270.89/131,179.68
6. Step 6: Final answer
   x = 108,583.52