Finding the Fourth Proportional to 42,442.58, 63,633.40 and 19,940.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,442.58 : 63,633.40 = 19,940.58 : x
2. Step 2: Convert to fraction form
   42,442.58/63,633.40 = 19,940.58/x
3. Step 3: Cross multiply
   42,442.58x = 63,633.40 × 19,940.58
4. Step 4: Simplify right side
   42,442.58x = 1,268,886,853.52
5. Step 5: Solve for x
   x = 1,268,886,853.52/42,442.58
6. Step 6: Final answer
   x = 29,896.55