Finding the Fourth Proportional to 115,058.30, 158,780.12 and 64,757.30

Step by Step Solution

1. Step 1: Write the proportion equation
   115,058.30 : 158,780.12 = 64,757.30 : x
2. Step 2: Convert to fraction form
   115,058.30/158,780.12 = 64,757.30/x
3. Step 3: Cross multiply
   115,058.30x = 158,780.12 × 64,757.30
4. Step 4: Simplify right side
   115,058.30x = 10,282,171,864.88
5. Step 5: Solve for x
   x = 10,282,171,864.88/115,058.30
6. Step 6: Final answer
   x = 89,364.89