Finding the Fourth Proportional to 42,308.68, 63,433.86 and 20,103.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,308.68 : 63,433.86 = 20,103.34 : x
2. Step 2: Convert to fraction form
   42,308.68/63,433.86 = 20,103.34/x
3. Step 3: Cross multiply
   42,308.68x = 63,433.86 × 20,103.34
4. Step 4: Simplify right side
   42,308.68x = 1,275,232,455.09
5. Step 5: Solve for x
   x = 1,275,232,455.09/42,308.68
6. Step 6: Final answer
   x = 30,141.15