Finding the Fourth Proportional to 124,128.05, 171,293.33 and 67,538.21

Step by Step Solution

1. Step 1: Write the proportion equation
   124,128.05 : 171,293.33 = 67,538.21 : x
2. Step 2: Convert to fraction form
   124,128.05/171,293.33 = 67,538.21/x
3. Step 3: Cross multiply
   124,128.05x = 171,293.33 × 67,538.21
4. Step 4: Simplify right side
   124,128.05x = 11,568,844,205.52
5. Step 5: Solve for x
   x = 11,568,844,205.52/124,128.05
6. Step 6: Final answer
   x = 93,200.89