Finding the Fourth Proportional to 147,810.28, 203,978.82 and 80,743.72

Step by Step Solution

1. Step 1: Write the proportion equation
   147,810.28 : 203,978.82 = 80,743.72 : x
2. Step 2: Convert to fraction form
   147,810.28/203,978.82 = 80,743.72/x
3. Step 3: Cross multiply
   147,810.28x = 203,978.82 × 80,743.72
4. Step 4: Simplify right side
   147,810.28x = 16,470,008,728.01
5. Step 5: Solve for x
   x = 16,470,008,728.01/147,810.28
6. Step 6: Final answer
   x = 111,426.68