Finding the Fourth Proportional to 42,012.56, 63,007.84 and 19,820.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.56 : 63,007.84 = 19,820.08 : x
2. Step 2: Convert to fraction form
   42,012.56/63,007.84 = 19,820.08/x
3. Step 3: Cross multiply
   42,012.56x = 63,007.84 × 19,820.08
4. Step 4: Simplify right side
   42,012.56x = 1,248,820,429.43
5. Step 5: Solve for x
   x = 1,248,820,429.43/42,012.56
6. Step 6: Final answer
   x = 29,724.93