Finding the Fourth Proportional to 123,682.56, 170,685.74 and 69,966.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,682.56 : 170,685.74 = 69,966.50 : x
2. Step 2: Convert to fraction form
   123,682.56/170,685.74 = 69,966.50/x
3. Step 3: Cross multiply
   123,682.56x = 170,685.74 × 69,966.50
4. Step 4: Simplify right side
   123,682.56x = 11,942,282,624.45
5. Step 5: Solve for x
   x = 11,942,282,624.45/123,682.56
6. Step 6: Final answer
   x = 96,555.91