Finding the Fourth Proportional to 115,069.52, 158,785.82 and 64,078.40

Step by Step Solution

1. Step 1: Write the proportion equation
   115,069.52 : 158,785.82 = 64,078.40 : x
2. Step 2: Convert to fraction form
   115,069.52/158,785.82 = 64,078.40/x
3. Step 3: Cross multiply
   115,069.52x = 158,785.82 × 64,078.40
4. Step 4: Simplify right side
   115,069.52x = 10,174,741,288.29
5. Step 5: Solve for x
   x = 10,174,741,288.29/115,069.52
6. Step 6: Final answer
   x = 88,422.56