Finding the Fourth Proportional to 115,400.76, 159,255.90 and 65,103

Step by Step Solution

1. Step 1: Write the proportion equation
   115,400.76 : 159,255.90 = 65,103 : x
2. Step 2: Convert to fraction form
   115,400.76/159,255.90 = 65,103/x
3. Step 3: Cross multiply
   115,400.76x = 159,255.90 × 65,103
4. Step 4: Simplify right side
   115,400.76x = 10,368,036,857.70
5. Step 5: Solve for x
   x = 10,368,036,857.70/115,400.76
6. Step 6: Final answer
   x = 89,843.75