Finding the Fourth Proportional to 115,260, 159,061.61 and 64,272.23

Step by Step Solution

1. Step 1: Write the proportion equation
   115,260 : 159,061.61 = 64,272.23 : x
2. Step 2: Convert to fraction form
   115,260/159,061.61 = 64,272.23/x
3. Step 3: Cross multiply
   115,260x = 159,061.61 × 64,272.23
4. Step 4: Simplify right side
   115,260x = 10,223,244,940.42
5. Step 5: Solve for x
   x = 10,223,244,940.42/115,260
6. Step 6: Final answer
   x = 88,697.25