Finding the Fourth Proportional to 42,552.82, 63,786.99 and 21,729.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,552.82 : 63,786.99 = 21,729.78 : x
2. Step 2: Convert to fraction form
   42,552.82/63,786.99 = 21,729.78/x
3. Step 3: Cross multiply
   42,552.82x = 63,786.99 × 21,729.78
4. Step 4: Simplify right side
   42,552.82x = 1,386,077,259.56
5. Step 5: Solve for x
   x = 1,386,077,259.56/42,552.82
6. Step 6: Final answer
   x = 32,573.10