Finding the Fourth Proportional to 80,920.86, 121,168.62 and 65,041.62

Step by Step Solution

1. Step 1: Write the proportion equation
   80,920.86 : 121,168.62 = 65,041.62 : x
2. Step 2: Convert to fraction form
   80,920.86/121,168.62 = 65,041.62/x
3. Step 3: Cross multiply
   80,920.86x = 121,168.62 × 65,041.62
4. Step 4: Simplify right side
   80,920.86x = 7,881,003,337.96
5. Step 5: Solve for x
   x = 7,881,003,337.96/80,920.86
6. Step 6: Final answer
   x = 97,391.49