Finding the Fourth Proportional to 80,892.09, 121,259.77 and 30,933.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,892.09 : 121,259.77 = 30,933.72 : x
2. Step 2: Convert to fraction form
   80,892.09/121,259.77 = 30,933.72/x
3. Step 3: Cross multiply
   80,892.09x = 121,259.77 × 30,933.72
4. Step 4: Simplify right side
   80,892.09x = 3,751,015,695.11
5. Step 5: Solve for x
   x = 3,751,015,695.11/80,892.09
6. Step 6: Final answer
   x = 46,370.61