Finding the Fourth Proportional to 42,857.85, 64,291.00 and 14,774.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,857.85 : 64,291.00 = 14,774.21 : x
2. Step 2: Convert to fraction form
   42,857.85/64,291.00 = 14,774.21/x
3. Step 3: Cross multiply
   42,857.85x = 64,291.00 × 14,774.21
4. Step 4: Simplify right side
   42,857.85x = 949,848,339.78
5. Step 5: Solve for x
   x = 949,848,339.78/42,857.85
6. Step 6: Final answer
   x = 22,162.76