Finding the Fourth Proportional to 42,704.57, 64,095.91 and 21,659.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,704.57 : 64,095.91 = 21,659.13 : x
2. Step 2: Convert to fraction form
   42,704.57/64,095.91 = 21,659.13/x
3. Step 3: Cross multiply
   42,704.57x = 64,095.91 × 21,659.13
4. Step 4: Simplify right side
   42,704.57x = 1,388,261,593.01
5. Step 5: Solve for x
   x = 1,388,261,593.01/42,704.57
6. Step 6: Final answer
   x = 32,508.50