Finding the Fourth Proportional to 65,810.98, 90,819.17 and 37,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,810.98 : 90,819.17 = 37,136.72 : x
2. Step 2: Convert to fraction form
   65,810.98/90,819.17 = 37,136.72/x
3. Step 3: Cross multiply
   65,810.98x = 90,819.17 × 37,136.72
4. Step 4: Simplify right side
   65,810.98x = 3,372,726,086.92
5. Step 5: Solve for x
   x = 3,372,726,086.92/65,810.98
6. Step 6: Final answer
   x = 51,248.68