Finding the Fourth Proportional to 42,498.82, 63,705.20 and 21,375.03

Step by Step Solution

1. Step 1: Write the proportion equation
   42,498.82 : 63,705.20 = 21,375.03 : x
2. Step 2: Convert to fraction form
   42,498.82/63,705.20 = 21,375.03/x
3. Step 3: Cross multiply
   42,498.82x = 63,705.20 × 21,375.03
4. Step 4: Simplify right side
   42,498.82x = 1,361,700,454.28
5. Step 5: Solve for x
   x = 1,361,700,454.28/42,498.82
6. Step 6: Final answer
   x = 32,040.90