Finding the Fourth Proportional to 64,863.56, 89,499.06 and 39,695.24

Step by Step Solution

1. Step 1: Write the proportion equation
   64,863.56 : 89,499.06 = 39,695.24 : x
2. Step 2: Convert to fraction form
   64,863.56/89,499.06 = 39,695.24/x
3. Step 3: Cross multiply
   64,863.56x = 89,499.06 × 39,695.24
4. Step 4: Simplify right side
   64,863.56x = 3,552,686,666.47
5. Step 5: Solve for x
   x = 3,552,686,666.47/64,863.56
6. Step 6: Final answer
   x = 54,771.69