Finding the Fourth Proportional to 42,199.82, 63,308.26 and 18,826.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,199.82 : 63,308.26 = 18,826.25 : x
2. Step 2: Convert to fraction form
   42,199.82/63,308.26 = 18,826.25/x
3. Step 3: Cross multiply
   42,199.82x = 63,308.26 × 18,826.25
4. Step 4: Simplify right side
   42,199.82x = 1,191,857,129.83
5. Step 5: Solve for x
   x = 1,191,857,129.83/42,199.82
6. Step 6: Final answer
   x = 28,243.18