Finding the Fourth Proportional to 65,688.89, 90,650.78 and 37,394.58

Step by Step Solution

1. Step 1: Write the proportion equation
   65,688.89 : 90,650.78 = 37,394.58 : x
2. Step 2: Convert to fraction form
   65,688.89/90,650.78 = 37,394.58/x
3. Step 3: Cross multiply
   65,688.89x = 90,650.78 × 37,394.58
4. Step 4: Simplify right side
   65,688.89x = 3,389,847,628.06
5. Step 5: Solve for x
   x = 3,389,847,628.06/65,688.89
6. Step 6: Final answer
   x = 51,604.58