Finding the Fourth Proportional to 65,724.78, 90,700.24 and 35,510.10

Step by Step Solution

1. Step 1: Write the proportion equation
   65,724.78 : 90,700.24 = 35,510.10 : x
2. Step 2: Convert to fraction form
   65,724.78/90,700.24 = 35,510.10/x
3. Step 3: Cross multiply
   65,724.78x = 90,700.24 × 35,510.10
4. Step 4: Simplify right side
   65,724.78x = 3,220,774,230.10
5. Step 5: Solve for x
   x = 3,220,774,230.10/65,724.78
6. Step 6: Final answer
   x = 49,003.95