Finding the Fourth Proportional to 114,989.43, 158,685.17 and 64,688.43

Step by Step Solution

1. Step 1: Write the proportion equation
   114,989.43 : 158,685.17 = 64,688.43 : x
2. Step 2: Convert to fraction form
   114,989.43/158,685.17 = 64,688.43/x
3. Step 3: Cross multiply
   114,989.43x = 158,685.17 × 64,688.43
4. Step 4: Simplify right side
   114,989.43x = 10,265,093,394.72
5. Step 5: Solve for x
   x = 10,265,093,394.72/114,989.43
6. Step 6: Final answer
   x = 89,269.89