Finding the Fourth Proportional to 65,160.21, 89,911.53 and 36,478.38

Step by Step Solution

1. Step 1: Write the proportion equation
   65,160.21 : 89,911.53 = 36,478.38 : x
2. Step 2: Convert to fraction form
   65,160.21/89,911.53 = 36,478.38/x
3. Step 3: Cross multiply
   65,160.21x = 89,911.53 × 36,478.38
4. Step 4: Simplify right side
   65,160.21x = 3,279,826,957.72
5. Step 5: Solve for x
   x = 3,279,826,957.72/65,160.21
6. Step 6: Final answer
   x = 50,334.81