Finding the Fourth Proportional to 43,044.96, 64,583.76 and 20,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,044.96 : 64,583.76 = 20,856.72 : x
2. Step 2: Convert to fraction form
   43,044.96/64,583.76 = 20,856.72/x
3. Step 3: Cross multiply
   43,044.96x = 64,583.76 × 20,856.72
4. Step 4: Simplify right side
   43,044.96x = 1,347,005,398.87
5. Step 5: Solve for x
   x = 1,347,005,398.87/43,044.96
6. Step 6: Final answer
   x = 31,292.99