Finding the Fourth Proportional to 83,199.12, 124,667.16 and 67,540.20

Step by Step Solution

1. Step 1: Write the proportion equation
   83,199.12 : 124,667.16 = 67,540.20 : x
2. Step 2: Convert to fraction form
   83,199.12/124,667.16 = 67,540.20/x
3. Step 3: Cross multiply
   83,199.12x = 124,667.16 × 67,540.20
4. Step 4: Simplify right side
   83,199.12x = 8,420,044,919.83
5. Step 5: Solve for x
   x = 8,420,044,919.83/83,199.12
6. Step 6: Final answer
   x = 101,203.53