Finding the Fourth Proportional to 123,071.75, 169,870.67 and 80,158.21

Step by Step Solution

1. Step 1: Write the proportion equation
   123,071.75 : 169,870.67 = 80,158.21 : x
2. Step 2: Convert to fraction form
   123,071.75/169,870.67 = 80,158.21/x
3. Step 3: Cross multiply
   123,071.75x = 169,870.67 × 80,158.21
4. Step 4: Simplify right side
   123,071.75x = 13,616,528,313.83
5. Step 5: Solve for x
   x = 13,616,528,313.83/123,071.75
6. Step 6: Final answer
   x = 110,638.94