Finding the Fourth Proportional to 65,243.50, 90,079.88 and 40,751.62

Step by Step Solution

1. Step 1: Write the proportion equation
   65,243.50 : 90,079.88 = 40,751.62 : x
2. Step 2: Convert to fraction form
   65,243.50/90,079.88 = 40,751.62/x
3. Step 3: Cross multiply
   65,243.50x = 90,079.88 × 40,751.62
4. Step 4: Simplify right side
   65,243.50x = 3,670,900,610.45
5. Step 5: Solve for x
   x = 3,670,900,610.45/65,243.50
6. Step 6: Final answer
   x = 56,264.62