Finding the Fourth Proportional to 115,059.30, 158,781.51 and 64,758.30

Step by Step Solution

1. Step 1: Write the proportion equation
   115,059.30 : 158,781.51 = 64,758.30 : x
2. Step 2: Convert to fraction form
   115,059.30/158,781.51 = 64,758.30/x
3. Step 3: Cross multiply
   115,059.30x = 158,781.51 × 64,758.30
4. Step 4: Simplify right side
   115,059.30x = 10,282,420,659.03
5. Step 5: Solve for x
   x = 10,282,420,659.03/115,059.30
6. Step 6: Final answer
   x = 89,366.27