Finding the Fourth Proportional to 65,945.12, 91,004.13 and 35,731.21

Step by Step Solution

1. Step 1: Write the proportion equation
   65,945.12 : 91,004.13 = 35,731.21 : x
2. Step 2: Convert to fraction form
   65,945.12/91,004.13 = 35,731.21/x
3. Step 3: Cross multiply
   65,945.12x = 91,004.13 × 35,731.21
4. Step 4: Simplify right side
   65,945.12x = 3,251,687,224.88
5. Step 5: Solve for x
   x = 3,251,687,224.88/65,945.12
6. Step 6: Final answer
   x = 49,308.99