Finding the Fourth Proportional to 123,099.15, 169,764.06 and 80,681.07

Step by Step Solution

1. Step 1: Write the proportion equation
   123,099.15 : 169,764.06 = 80,681.07 : x
2. Step 2: Convert to fraction form
   123,099.15/169,764.06 = 80,681.07/x
3. Step 3: Cross multiply
   123,099.15x = 169,764.06 × 80,681.07
4. Step 4: Simplify right side
   123,099.15x = 13,696,746,008.34
5. Step 5: Solve for x
   x = 13,696,746,008.34/123,099.15
6. Step 6: Final answer
   x = 111,265.97