Finding the Fourth Proportional to 65,113.72, 97,669.57 and 20,740.10

Step by Step Solution

1. Step 1: Write the proportion equation
   65,113.72 : 97,669.57 = 20,740.10 : x
2. Step 2: Convert to fraction form
   65,113.72/97,669.57 = 20,740.10/x
3. Step 3: Cross multiply
   65,113.72x = 97,669.57 × 20,740.10
4. Step 4: Simplify right side
   65,113.72x = 2,025,676,648.76
5. Step 5: Solve for x
   x = 2,025,676,648.76/65,113.72
6. Step 6: Final answer
   x = 31,109.83