Finding the Fourth Proportional to 115,119.02, 158,861.86 and 64,131.68

Step by Step Solution

1. Step 1: Write the proportion equation
   115,119.02 : 158,861.86 = 64,131.68 : x
2. Step 2: Convert to fraction form
   115,119.02/158,861.86 = 64,131.68/x
3. Step 3: Cross multiply
   115,119.02x = 158,861.86 × 64,131.68
4. Step 4: Simplify right side
   115,119.02x = 10,188,078,206.55
5. Step 5: Solve for x
   x = 10,188,078,206.55/115,119.02
6. Step 6: Final answer
   x = 88,500.39