Finding the Fourth Proportional to 65,760.73, 90,750.71 and 38,902.55

Step by Step Solution

1. Step 1: Write the proportion equation
   65,760.73 : 90,750.71 = 38,902.55 : x
2. Step 2: Convert to fraction form
   65,760.73/90,750.71 = 38,902.55/x
3. Step 3: Cross multiply
   65,760.73x = 90,750.71 × 38,902.55
4. Step 4: Simplify right side
   65,760.73x = 3,530,433,676.81
5. Step 5: Solve for x
   x = 3,530,433,676.81/65,760.73
6. Step 6: Final answer
   x = 53,686.05