Finding the Fourth Proportional to 42,013.56, 63,009.34 and 19,821.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,013.56 : 63,009.34 = 19,821.08 : x
2. Step 2: Convert to fraction form
   42,013.56/63,009.34 = 19,821.08/x
3. Step 3: Cross multiply
   42,013.56x = 63,009.34 × 19,821.08
4. Step 4: Simplify right side
   42,013.56x = 1,248,913,168.89
5. Step 5: Solve for x
   x = 1,248,913,168.89/42,013.56
6. Step 6: Final answer
   x = 29,726.43