Finding the Fourth Proportional to 85,724.50, 128,550.65 and 32,407.49

Step by Step Solution

1. Step 1: Write the proportion equation
   85,724.50 : 128,550.65 = 32,407.49 : x
2. Step 2: Convert to fraction form
   85,724.50/128,550.65 = 32,407.49/x
3. Step 3: Cross multiply
   85,724.50x = 128,550.65 × 32,407.49
4. Step 4: Simplify right side
   85,724.50x = 4,166,004,063.71
5. Step 5: Solve for x
   x = 4,166,004,063.71/85,724.50
6. Step 6: Final answer
   x = 48,597.59