Finding the Fourth Proportional to 65,956.41, 91,025.78 and 37,671.21

Step by Step Solution

1. Step 1: Write the proportion equation
   65,956.41 : 91,025.78 = 37,671.21 : x
2. Step 2: Convert to fraction form
   65,956.41/91,025.78 = 37,671.21/x
3. Step 3: Cross multiply
   65,956.41x = 91,025.78 × 37,671.21
4. Step 4: Simplify right side
   65,956.41x = 3,429,051,085.44
5. Step 5: Solve for x
   x = 3,429,051,085.44/65,956.41
6. Step 6: Final answer
   x = 51,989.66