Finding the Fourth Proportional to 85,447.86, 128,171.27 and 34,846.69

Step by Step Solution

1. Step 1: Write the proportion equation
   85,447.86 : 128,171.27 = 34,846.69 : x
2. Step 2: Convert to fraction form
   85,447.86/128,171.27 = 34,846.69/x
3. Step 3: Cross multiply
   85,447.86x = 128,171.27 × 34,846.69
4. Step 4: Simplify right side
   85,447.86x = 4,466,344,512.60
5. Step 5: Solve for x
   x = 4,466,344,512.60/85,447.86
6. Step 6: Final answer
   x = 52,269.82