Finding the Fourth Proportional to 66,571.05, 91,867.83 and 39,714.69

Step by Step Solution

1. Step 1: Write the proportion equation
   66,571.05 : 91,867.83 = 39,714.69 : x
2. Step 2: Convert to fraction form
   66,571.05/91,867.83 = 39,714.69/x
3. Step 3: Cross multiply
   66,571.05x = 91,867.83 × 39,714.69
4. Step 4: Simplify right side
   66,571.05x = 3,648,502,389.42
5. Step 5: Solve for x
   x = 3,648,502,389.42/66,571.05
6. Step 6: Final answer
   x = 54,806.14