Finding the Fourth Proportional to 65,037.74, 89,766.56 and 39,538.70

Step by Step Solution

1. Step 1: Write the proportion equation
   65,037.74 : 89,766.56 = 39,538.70 : x
2. Step 2: Convert to fraction form
   65,037.74/89,766.56 = 39,538.70/x
3. Step 3: Cross multiply
   65,037.74x = 89,766.56 × 39,538.70
4. Step 4: Simplify right side
   65,037.74x = 3,549,253,112.59
5. Step 5: Solve for x
   x = 3,549,253,112.59/65,037.74
6. Step 6: Final answer
   x = 54,572.21