Finding the Fourth Proportional to 123,700.14, 170,706.78 and 67,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,700.14 : 170,706.78 = 67,111.50 : x
2. Step 2: Convert to fraction form
   123,700.14/170,706.78 = 67,111.50/x
3. Step 3: Cross multiply
   123,700.14x = 170,706.78 × 67,111.50
4. Step 4: Simplify right side
   123,700.14x = 11,456,388,065.97
5. Step 5: Solve for x
   x = 11,456,388,065.97/123,700.14
6. Step 6: Final answer
   x = 92,614.19