Finding the Fourth Proportional to 42,785.64, 64,162.48 and 14,697.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,785.64 : 64,162.48 = 14,697.72 : x
2. Step 2: Convert to fraction form
   42,785.64/64,162.48 = 14,697.72/x
3. Step 3: Cross multiply
   42,785.64x = 64,162.48 × 14,697.72
4. Step 4: Simplify right side
   42,785.64x = 943,042,165.55
5. Step 5: Solve for x
   x = 943,042,165.55/42,785.64
6. Step 6: Final answer
   x = 22,041.09