Finding the Fourth Proportional to 43,285.59, 64,939.89 and 13,704.03

Step by Step Solution

1. Step 1: Write the proportion equation
   43,285.59 : 64,939.89 = 13,704.03 : x
2. Step 2: Convert to fraction form
   43,285.59/64,939.89 = 13,704.03/x
3. Step 3: Cross multiply
   43,285.59x = 64,939.89 × 13,704.03
4. Step 4: Simplify right side
   43,285.59x = 889,938,200.76
5. Step 5: Solve for x
   x = 889,938,200.76/43,285.59
6. Step 6: Final answer
   x = 20,559.69