Finding the Fourth Proportional to 115,127.80, 158,884.50 and 64,143.88

Step by Step Solution

1. Step 1: Write the proportion equation
   115,127.80 : 158,884.50 = 64,143.88 : x
2. Step 2: Convert to fraction form
   115,127.80/158,884.50 = 64,143.88/x
3. Step 3: Cross multiply
   115,127.80x = 158,884.50 × 64,143.88
4. Step 4: Simplify right side
   115,127.80x = 10,191,468,301.86
5. Step 5: Solve for x
   x = 10,191,468,301.86/115,127.80
6. Step 6: Final answer
   x = 88,523.09