Finding the Fourth Proportional to 43,310.89, 64,969.17 and 13,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,310.89 : 64,969.17 = 13,730.50 : x
2. Step 2: Convert to fraction form
   43,310.89/64,969.17 = 13,730.50/x
3. Step 3: Cross multiply
   43,310.89x = 64,969.17 × 13,730.50
4. Step 4: Simplify right side
   43,310.89x = 892,059,188.69
5. Step 5: Solve for x
   x = 892,059,188.69/43,310.89
6. Step 6: Final answer
   x = 20,596.65