Finding the Fourth Proportional to 123,906.80, 170,991.81 and 70,201.76

Step by Step Solution

1. Step 1: Write the proportion equation
   123,906.80 : 170,991.81 = 70,201.76 : x
2. Step 2: Convert to fraction form
   123,906.80/170,991.81 = 70,201.76/x
3. Step 3: Cross multiply
   123,906.80x = 170,991.81 × 70,201.76
4. Step 4: Simplify right side
   123,906.80x = 12,003,926,007.59
5. Step 5: Solve for x
   x = 12,003,926,007.59/123,906.80
6. Step 6: Final answer
   x = 96,878.67