Finding the Fourth Proportional to 85,216.83, 117,609.53 and 49,408.35

Step by Step Solution

1. Step 1: Write the proportion equation
   85,216.83 : 117,609.53 = 49,408.35 : x
2. Step 2: Convert to fraction form
   85,216.83/117,609.53 = 49,408.35/x
3. Step 3: Cross multiply
   85,216.83x = 117,609.53 × 49,408.35
4. Step 4: Simplify right side
   85,216.83x = 5,810,892,133.50
5. Step 5: Solve for x
   x = 5,810,892,133.50/85,216.83
6. Step 6: Final answer
   x = 68,189.49