Finding the Fourth Proportional to 85,872.16, 118,481.16 and 49,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,872.16 : 118,481.16 = 49,564.72 : x
2. Step 2: Convert to fraction form
   85,872.16/118,481.16 = 49,564.72/x
3. Step 3: Cross multiply
   85,872.16x = 118,481.16 × 49,564.72
4. Step 4: Simplify right side
   85,872.16x = 5,872,485,520.68
5. Step 5: Solve for x
   x = 5,872,485,520.68/85,872.16
6. Step 6: Final answer
   x = 68,386.37