Finding the Fourth Proportional to 42,538.78, 63,842.19 and 19,167.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,538.78 : 63,842.19 = 19,167.04 : x
2. Step 2: Convert to fraction form
   42,538.78/63,842.19 = 19,167.04/x
3. Step 3: Cross multiply
   42,538.78x = 63,842.19 × 19,167.04
4. Step 4: Simplify right side
   42,538.78x = 1,223,665,809.42
5. Step 5: Solve for x
   x = 1,223,665,809.42/42,538.78
6. Step 6: Final answer
   x = 28,765.89