Finding the Fourth Proportional to 115,065.13, 158,789.37 and 64,078.46

Step by Step Solution

1. Step 1: Write the proportion equation
   115,065.13 : 158,789.37 = 64,078.46 : x
2. Step 2: Convert to fraction form
   115,065.13/158,789.37 = 64,078.46/x
3. Step 3: Cross multiply
   115,065.13x = 158,789.37 × 64,078.46
4. Step 4: Simplify right side
   115,065.13x = 10,174,978,931.24
5. Step 5: Solve for x
   x = 10,174,978,931.24/115,065.13
6. Step 6: Final answer
   x = 88,428.00