Finding the Fourth Proportional to 115,208.48, 158,982.72 and 64,218.56

Step by Step Solution

1. Step 1: Write the proportion equation
   115,208.48 : 158,982.72 = 64,218.56 : x
2. Step 2: Convert to fraction form
   115,208.48/158,982.72 = 64,218.56/x
3. Step 3: Cross multiply
   115,208.48x = 158,982.72 × 64,218.56
4. Step 4: Simplify right side
   115,208.48x = 10,209,641,343.28
5. Step 5: Solve for x
   x = 10,209,641,343.28/115,208.48
6. Step 6: Final answer
   x = 88,618.84