Finding the Fourth Proportional to 85,499.92, 117,961 and 49,660.46

Step by Step Solution

1. Step 1: Write the proportion equation
   85,499.92 : 117,961 = 49,660.46 : x
2. Step 2: Convert to fraction form
   85,499.92/117,961 = 49,660.46/x
3. Step 3: Cross multiply
   85,499.92x = 117,961 × 49,660.46
4. Step 4: Simplify right side
   85,499.92x = 5,857,997,522.06
5. Step 5: Solve for x
   x = 5,857,997,522.06/85,499.92
6. Step 6: Final answer
   x = 68,514.66