Finding the Fourth Proportional to 65,192.71, 89,962.82 and 40,037.35

Step by Step Solution

1. Step 1: Write the proportion equation
   65,192.71 : 89,962.82 = 40,037.35 : x
2. Step 2: Convert to fraction form
   65,192.71/89,962.82 = 40,037.35/x
3. Step 3: Cross multiply
   65,192.71x = 89,962.82 × 40,037.35
4. Step 4: Simplify right side
   65,192.71x = 3,601,872,911.33
5. Step 5: Solve for x
   x = 3,601,872,911.33/65,192.71
6. Step 6: Final answer
   x = 55,249.63