Finding the Fourth Proportional to 123,788.24, 170,828.56 and 67,199.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,788.24 : 170,828.56 = 67,199.60 : x
2. Step 2: Convert to fraction form
   123,788.24/170,828.56 = 67,199.60/x
3. Step 3: Cross multiply
   123,788.24x = 170,828.56 × 67,199.60
4. Step 4: Simplify right side
   123,788.24x = 11,479,610,900.58
5. Step 5: Solve for x
   x = 11,479,610,900.58/123,788.24
6. Step 6: Final answer
   x = 92,735.88