Finding the Fourth Proportional to 123,291.25, 170,132.23 and 75,538.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,291.25 : 170,132.23 = 75,538.10 : x
2. Step 2: Convert to fraction form
   123,291.25/170,132.23 = 75,538.10/x
3. Step 3: Cross multiply
   123,291.25x = 170,132.23 × 75,538.10
4. Step 4: Simplify right side
   123,291.25x = 12,851,465,639.45
5. Step 5: Solve for x
   x = 12,851,465,639.45/123,291.25
6. Step 6: Final answer
   x = 104,236.64