Finding the Fourth Proportional to 123,175.31, 170,028.15 and 80,736.58

Step by Step Solution

1. Step 1: Write the proportion equation
   123,175.31 : 170,028.15 = 80,736.58 : x
2. Step 2: Convert to fraction form
   123,175.31/170,028.15 = 80,736.58/x
3. Step 3: Cross multiply
   123,175.31x = 170,028.15 × 80,736.58
4. Step 4: Simplify right side
   123,175.31x = 13,727,490,484.59
5. Step 5: Solve for x
   x = 13,727,490,484.59/123,175.31
6. Step 6: Final answer
   x = 111,446.77