Finding the Fourth Proportional to 65,049.60, 97,507.31 and 31,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,049.60 : 97,507.31 = 31,728.50 : x
2. Step 2: Convert to fraction form
   65,049.60/97,507.31 = 31,728.50/x
3. Step 3: Cross multiply
   65,049.60x = 97,507.31 × 31,728.50
4. Step 4: Simplify right side
   65,049.60x = 3,093,760,039.16
5. Step 5: Solve for x
   x = 3,093,760,039.16/65,049.60
6. Step 6: Final answer
   x = 47,560.02