Finding the Fourth Proportional to 115,128.02, 158,882.15 and 64,144.19

Step by Step Solution

1. Step 1: Write the proportion equation
   115,128.02 : 158,882.15 = 64,144.19 : x
2. Step 2: Convert to fraction form
   115,128.02/158,882.15 = 64,144.19/x
3. Step 3: Cross multiply
   115,128.02x = 158,882.15 × 64,144.19
4. Step 4: Simplify right side
   115,128.02x = 10,191,366,183.16
5. Step 5: Solve for x
   x = 10,191,366,183.16/115,128.02
6. Step 6: Final answer
   x = 88,522.04