Finding the Fourth Proportional to 85,454.56, 128,227.86 and 35,569.12

Step by Step Solution

1. Step 1: Write the proportion equation
   85,454.56 : 128,227.86 = 35,569.12 : x
2. Step 2: Convert to fraction form
   85,454.56/128,227.86 = 35,569.12/x
3. Step 3: Cross multiply
   85,454.56x = 128,227.86 × 35,569.12
4. Step 4: Simplify right side
   85,454.56x = 4,560,952,139.68
5. Step 5: Solve for x
   x = 4,560,952,139.68/85,454.56
6. Step 6: Final answer
   x = 53,372.84