Finding the Fourth Proportional to 42,727.46, 64,131.39 and 21,682.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,727.46 : 64,131.39 = 21,682.61 : x
2. Step 2: Convert to fraction form
   42,727.46/64,131.39 = 21,682.61/x
3. Step 3: Cross multiply
   42,727.46x = 64,131.39 × 21,682.61
4. Step 4: Simplify right side
   42,727.46x = 1,390,535,597.47
5. Step 5: Solve for x
   x = 1,390,535,597.47/42,727.46
6. Step 6: Final answer
   x = 32,544.31