Finding the Fourth Proportional to 147,733.50, 203,872.78 and 80,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,733.50 : 203,872.78 = 80,665.50 : x
2. Step 2: Convert to fraction form
   147,733.50/203,872.78 = 80,665.50/x
3. Step 3: Cross multiply
   147,733.50x = 203,872.78 × 80,665.50
4. Step 4: Simplify right side
   147,733.50x = 16,445,499,735.09
5. Step 5: Solve for x
   x = 16,445,499,735.09/147,733.50
6. Step 6: Final answer
   x = 111,318.69