Finding the Fourth Proportional to 65,061.20, 97,521.60 and 31,707.68

Step by Step Solution

1. Step 1: Write the proportion equation
   65,061.20 : 97,521.60 = 31,707.68 : x
2. Step 2: Convert to fraction form
   65,061.20/97,521.60 = 31,707.68/x
3. Step 3: Cross multiply
   65,061.20x = 97,521.60 × 31,707.68
4. Step 4: Simplify right side
   65,061.20x = 3,092,183,685.89
5. Step 5: Solve for x
   x = 3,092,183,685.89/65,061.20
6. Step 6: Final answer
   x = 47,527.31