Finding the Fourth Proportional to 65,689.31, 90,651.24 and 35,474.63

Step by Step Solution

1. Step 1: Write the proportion equation
   65,689.31 : 90,651.24 = 35,474.63 : x
2. Step 2: Convert to fraction form
   65,689.31/90,651.24 = 35,474.63/x
3. Step 3: Cross multiply
   65,689.31x = 90,651.24 × 35,474.63
4. Step 4: Simplify right side
   65,689.31x = 3,215,819,513.36
5. Step 5: Solve for x
   x = 3,215,819,513.36/65,689.31
6. Step 6: Final answer
   x = 48,954.99