Finding the Fourth Proportional to 65,472.72, 90,353.16 and 35,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,472.72 : 90,353.16 = 35,664.72 : x
2. Step 2: Convert to fraction form
   65,472.72/90,353.16 = 35,664.72/x
3. Step 3: Cross multiply
   65,472.72x = 90,353.16 × 35,664.72
4. Step 4: Simplify right side
   65,472.72x = 3,222,420,152.52
5. Step 5: Solve for x
   x = 3,222,420,152.52/65,472.72
6. Step 6: Final answer
   x = 49,217.75