Finding the Fourth Proportional to 123,942.96, 171,020.16 and 70,216.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,942.96 : 171,020.16 = 70,216.88 : x
2. Step 2: Convert to fraction form
   123,942.96/171,020.16 = 70,216.88/x
3. Step 3: Cross multiply
   123,942.96x = 171,020.16 × 70,216.88
4. Step 4: Simplify right side
   123,942.96x = 12,008,501,197.20
5. Step 5: Solve for x
   x = 12,008,501,197.20/123,942.96
6. Step 6: Final answer
   x = 96,887.32