Finding the Fourth Proportional to 115,018.94, 158,689.50 and 64,708.22

Step by Step Solution

1. Step 1: Write the proportion equation
   115,018.94 : 158,689.50 = 64,708.22 : x
2. Step 2: Convert to fraction form
   115,018.94/158,689.50 = 64,708.22/x
3. Step 3: Cross multiply
   115,018.94x = 158,689.50 × 64,708.22
4. Step 4: Simplify right side
   115,018.94x = 10,268,515,077.69
5. Step 5: Solve for x
   x = 10,268,515,077.69/115,018.94
6. Step 6: Final answer
   x = 89,276.73