Finding the Fourth Proportional to 85,981.16, 128,819.20 and 35,951

Step by Step Solution

1. Step 1: Write the proportion equation
   85,981.16 : 128,819.20 = 35,951 : x
2. Step 2: Convert to fraction form
   85,981.16/128,819.20 = 35,951/x
3. Step 3: Cross multiply
   85,981.16x = 128,819.20 × 35,951
4. Step 4: Simplify right side
   85,981.16x = 4,631,179,059.20
5. Step 5: Solve for x
   x = 4,631,179,059.20/85,981.16
6. Step 6: Final answer
   x = 53,862.72