Finding the Fourth Proportional to 83,408.94, 125,238.25 and 72,199.05

Step by Step Solution

1. Step 1: Write the proportion equation
   83,408.94 : 125,238.25 = 72,199.05 : x
2. Step 2: Convert to fraction form
   83,408.94/125,238.25 = 72,199.05/x
3. Step 3: Cross multiply
   83,408.94x = 125,238.25 × 72,199.05
4. Step 4: Simplify right side
   83,408.94x = 9,042,082,294.27
5. Step 5: Solve for x
   x = 9,042,082,294.27/83,408.94
6. Step 6: Final answer
   x = 108,406.63