Finding the Fourth Proportional to 42,491.91, 63,737.82 and 20,237.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,491.91 : 63,737.82 = 20,237.82 : x
2. Step 2: Convert to fraction form
   42,491.91/63,737.82 = 20,237.82/x
3. Step 3: Cross multiply
   42,491.91x = 63,737.82 × 20,237.82
4. Step 4: Simplify right side
   42,491.91x = 1,289,914,528.35
5. Step 5: Solve for x
   x = 1,289,914,528.35/42,491.91
6. Step 6: Final answer
   x = 30,356.71