Finding the Fourth Proportional to 64,735.05, 89,310.18 and 64,635.24

Step by Step Solution

1. Step 1: Write the proportion equation
   64,735.05 : 89,310.18 = 64,635.24 : x
2. Step 2: Convert to fraction form
   64,735.05/89,310.18 = 64,635.24/x
3. Step 3: Cross multiply
   64,735.05x = 89,310.18 × 64,635.24
4. Step 4: Simplify right side
   64,735.05x = 5,772,585,092.07
5. Step 5: Solve for x
   x = 5,772,585,092.07/64,735.05
6. Step 6: Final answer
   x = 89,172.48