Finding the Fourth Proportional to 37,139.50, 51,252.51 and 20,372.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,139.50 : 51,252.51 = 20,372.50 : x
2. Step 2: Convert to fraction form
   37,139.50/51,252.51 = 20,372.50/x
3. Step 3: Cross multiply
   37,139.50x = 51,252.51 × 20,372.50
4. Step 4: Simplify right side
   37,139.50x = 1,044,141,759.98
5. Step 5: Solve for x
   x = 1,044,141,759.98/37,139.50
6. Step 6: Final answer
   x = 28,114.05