Finding the Fourth Proportional to 65,430.72, 90,295.20 and 35,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,430.72 : 90,295.20 = 35,622.72 : x
2. Step 2: Convert to fraction form
   65,430.72/90,295.20 = 35,622.72/x
3. Step 3: Cross multiply
   65,430.72x = 90,295.20 × 35,622.72
4. Step 4: Simplify right side
   65,430.72x = 3,216,560,626.94
5. Step 5: Solve for x
   x = 3,216,560,626.94/65,430.72
6. Step 6: Final answer
   x = 49,159.79