Finding the Fourth Proportional to 64,964.88, 89,649.72 and 36,673.20

Step by Step Solution

1. Step 1: Write the proportion equation
   64,964.88 : 89,649.72 = 36,673.20 : x
2. Step 2: Convert to fraction form
   64,964.88/89,649.72 = 36,673.20/x
3. Step 3: Cross multiply
   64,964.88x = 89,649.72 × 36,673.20
4. Step 4: Simplify right side
   64,964.88x = 3,287,742,111.50
5. Step 5: Solve for x
   x = 3,287,742,111.50/64,964.88
6. Step 6: Final answer
   x = 50,607.99