Finding the Fourth Proportional to 213,786.15, 320,697.59 and 56,014.62

Step by Step Solution

1. Step 1: Write the proportion equation
   213,786.15 : 320,697.59 = 56,014.62 : x
2. Step 2: Convert to fraction form
   213,786.15/320,697.59 = 56,014.62/x
3. Step 3: Cross multiply
   213,786.15x = 320,697.59 × 56,014.62
4. Step 4: Simplify right side
   213,786.15x = 17,963,753,358.69
5. Step 5: Solve for x
   x = 17,963,753,358.69/213,786.15
6. Step 6: Final answer
   x = 84,026.74