Finding the Fourth Proportional to 42,649.44, 63,981.72 and 20,502.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,649.44 : 63,981.72 = 20,502.96 : x
2. Step 2: Convert to fraction form
   42,649.44/63,981.72 = 20,502.96/x
3. Step 3: Cross multiply
   42,649.44x = 63,981.72 × 20,502.96
4. Step 4: Simplify right side
   42,649.44x = 1,311,814,645.89
5. Step 5: Solve for x
   x = 1,311,814,645.89/42,649.44
6. Step 6: Final answer
   x = 30,758.07