Finding the Fourth Proportional to 42,524.10, 63,786.18 and 19,123.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,524.10 : 63,786.18 = 19,123.20 : x
2. Step 2: Convert to fraction form
   42,524.10/63,786.18 = 19,123.20/x
3. Step 3: Cross multiply
   42,524.10x = 63,786.18 × 19,123.20
4. Step 4: Simplify right side
   42,524.10x = 1,219,795,877.38
5. Step 5: Solve for x
   x = 1,219,795,877.38/42,524.10
6. Step 6: Final answer
   x = 28,684.81