Finding the Fourth Proportional to 115,219.28, 159,003.27 and 64,235.25

Step by Step Solution

1. Step 1: Write the proportion equation
   115,219.28 : 159,003.27 = 64,235.25 : x
2. Step 2: Convert to fraction form
   115,219.28/159,003.27 = 64,235.25/x
3. Step 3: Cross multiply
   115,219.28x = 159,003.27 × 64,235.25
4. Step 4: Simplify right side
   115,219.28x = 10,213,614,799.27
5. Step 5: Solve for x
   x = 10,213,614,799.27/115,219.28
6. Step 6: Final answer
   x = 88,645.01