Finding the Fourth Proportional to 85,669.34, 118,236.12 and 49,363.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,669.34 : 118,236.12 = 49,363.72 : x
2. Step 2: Convert to fraction form
   85,669.34/118,236.12 = 49,363.72/x
3. Step 3: Cross multiply
   85,669.34x = 118,236.12 × 49,363.72
4. Step 4: Simplify right side
   85,669.34x = 5,836,574,721.57
5. Step 5: Solve for x
   x = 5,836,574,721.57/85,669.34
6. Step 6: Final answer
   x = 68,129.10