Finding the Fourth Proportional to 65,224.42, 90,190.89 and 51,772.32

Step by Step Solution

1. Step 1: Write the proportion equation
   65,224.42 : 90,190.89 = 51,772.32 : x
2. Step 2: Convert to fraction form
   65,224.42/90,190.89 = 51,772.32/x
3. Step 3: Cross multiply
   65,224.42x = 90,190.89 × 51,772.32
4. Step 4: Simplify right side
   65,224.42x = 4,669,391,359.30
5. Step 5: Solve for x
   x = 4,669,391,359.30/65,224.42
6. Step 6: Final answer
   x = 71,589.62