Finding the Fourth Proportional to 115,014.30, 158,719.41 and 64,713.30

Step by Step Solution

1. Step 1: Write the proportion equation
   115,014.30 : 158,719.41 = 64,713.30 : x
2. Step 2: Convert to fraction form
   115,014.30/158,719.41 = 64,713.30/x
3. Step 3: Cross multiply
   115,014.30x = 158,719.41 × 64,713.30
4. Step 4: Simplify right side
   115,014.30x = 10,271,256,795.15
5. Step 5: Solve for x
   x = 10,271,256,795.15/115,014.30
6. Step 6: Final answer
   x = 89,304.17