Finding the Fourth Proportional to 123,912.56, 170,993.76 and 70,196.48

Step by Step Solution

1. Step 1: Write the proportion equation
   123,912.56 : 170,993.76 = 70,196.48 : x
2. Step 2: Convert to fraction form
   123,912.56/170,993.76 = 70,196.48/x
3. Step 3: Cross multiply
   123,912.56x = 170,993.76 × 70,196.48
4. Step 4: Simplify right side
   123,912.56x = 12,003,160,053.96
5. Step 5: Solve for x
   x = 12,003,160,053.96/123,912.56
6. Step 6: Final answer
   x = 96,867.99