Finding the Fourth Proportional to 123,788.57, 170,828.69 and 67,199.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,788.57 : 170,828.69 = 67,199.94 : x
2. Step 2: Convert to fraction form
   123,788.57/170,828.69 = 67,199.94/x
3. Step 3: Cross multiply
   123,788.57x = 170,828.69 × 67,199.94
4. Step 4: Simplify right side
   123,788.57x = 11,479,677,382.28
5. Step 5: Solve for x
   x = 11,479,677,382.28/123,788.57
6. Step 6: Final answer
   x = 92,736.17