Finding the Fourth Proportional to 123,493.32, 170,424 and 75,719.16

Step by Step Solution

1. Step 1: Write the proportion equation
   123,493.32 : 170,424 = 75,719.16 : x
2. Step 2: Convert to fraction form
   123,493.32/170,424 = 75,719.16/x
3. Step 3: Cross multiply
   123,493.32x = 170,424 × 75,719.16
4. Step 4: Simplify right side
   123,493.32x = 12,904,362,123.84
5. Step 5: Solve for x
   x = 12,904,362,123.84/123,493.32
6. Step 6: Final answer
   x = 104,494.41