Finding the Fourth Proportional to 42,123.28, 63,186.04 and 19,947.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,123.28 : 63,186.04 = 19,947.04 : x
2. Step 2: Convert to fraction form
   42,123.28/63,186.04 = 19,947.04/x
3. Step 3: Cross multiply
   42,123.28x = 63,186.04 × 19,947.04
4. Step 4: Simplify right side
   42,123.28x = 1,260,374,467.32
5. Step 5: Solve for x
   x = 1,260,374,467.32/42,123.28
6. Step 6: Final answer
   x = 29,921.09