Finding the Fourth Proportional to 42,338.48, 63,496.73 and 20,107.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,338.48 : 63,496.73 = 20,107.62 : x
2. Step 2: Convert to fraction form
   42,338.48/63,496.73 = 20,107.62/x
3. Step 3: Cross multiply
   42,338.48x = 63,496.73 × 20,107.62
4. Step 4: Simplify right side
   42,338.48x = 1,276,768,017.54
5. Step 5: Solve for x
   x = 1,276,768,017.54/42,338.48
6. Step 6: Final answer
   x = 30,156.21