Finding the Fourth Proportional to 143,082.56, 197,456.25 and 78,557.75

Step by Step Solution

1. Step 1: Write the proportion equation
   143,082.56 : 197,456.25 = 78,557.75 : x
2. Step 2: Convert to fraction form
   143,082.56/197,456.25 = 78,557.75/x
3. Step 3: Cross multiply
   143,082.56x = 197,456.25 × 78,557.75
4. Step 4: Simplify right side
   143,082.56x = 15,511,717,343.37
5. Step 5: Solve for x
   x = 15,511,717,343.37/143,082.56
6. Step 6: Final answer
   x = 108,410.96