Finding the Fourth Proportional to 42,308.52, 63,415.26 and 20,103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,308.52 : 63,415.26 = 20,103.72 : x
2. Step 2: Convert to fraction form
   42,308.52/63,415.26 = 20,103.72/x
3. Step 3: Cross multiply
   42,308.52x = 63,415.26 × 20,103.72
4. Step 4: Simplify right side
   42,308.52x = 1,274,882,630.77
5. Step 5: Solve for x
   x = 1,274,882,630.77/42,308.52
6. Step 6: Final answer
   x = 30,133.00