Finding the Fourth Proportional to 123,656.94, 170,648.91 and 75,886.38

Step by Step Solution

1. Step 1: Write the proportion equation
   123,656.94 : 170,648.91 = 75,886.38 : x
2. Step 2: Convert to fraction form
   123,656.94/170,648.91 = 75,886.38/x
3. Step 3: Cross multiply
   123,656.94x = 170,648.91 × 75,886.38
4. Step 4: Simplify right side
   123,656.94x = 12,949,928,030.85
5. Step 5: Solve for x
   x = 12,949,928,030.85/123,656.94
6. Step 6: Final answer
   x = 104,724.64