Finding the Fourth Proportional to 123,103.65, 169,770.27 and 80,685.57

Step by Step Solution

1. Step 1: Write the proportion equation
   123,103.65 : 169,770.27 = 80,685.57 : x
2. Step 2: Convert to fraction form
   123,103.65/169,770.27 = 80,685.57/x
3. Step 3: Cross multiply
   123,103.65x = 169,770.27 × 80,685.57
4. Step 4: Simplify right side
   123,103.65x = 13,698,011,004.00
5. Step 5: Solve for x
   x = 13,698,011,004.00/123,103.65
6. Step 6: Final answer
   x = 111,272.18