Finding the Fourth Proportional to 42,645.18, 63,995.46 and 19,271.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,645.18 : 63,995.46 = 19,271.82 : x
2. Step 2: Convert to fraction form
   42,645.18/63,995.46 = 19,271.82/x
3. Step 3: Cross multiply
   42,645.18x = 63,995.46 × 19,271.82
4. Step 4: Simplify right side
   42,645.18x = 1,233,308,985.94
5. Step 5: Solve for x
   x = 1,233,308,985.94/42,645.18
6. Step 6: Final answer
   x = 28,920.24