Finding the Fourth Proportional to 64,647.10, 89,212.72 and 35,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,647.10 : 89,212.72 = 35,969.50 : x
2. Step 2: Convert to fraction form
   64,647.10/89,212.72 = 35,969.50/x
3. Step 3: Cross multiply
   64,647.10x = 89,212.72 × 35,969.50
4. Step 4: Simplify right side
   64,647.10x = 3,208,937,021.07
5. Step 5: Solve for x
   x = 3,208,937,021.07/64,647.10
6. Step 6: Final answer
   x = 49,637.76