Finding the Fourth Proportional to 80,810.31, 121,081.80 and 41,313.09

Step by Step Solution

1. Step 1: Write the proportion equation
   80,810.31 : 121,081.80 = 41,313.09 : x
2. Step 2: Convert to fraction form
   80,810.31/121,081.80 = 41,313.09/x
3. Step 3: Cross multiply
   80,810.31x = 121,081.80 × 41,313.09
4. Step 4: Simplify right side
   80,810.31x = 5,002,263,300.76
5. Step 5: Solve for x
   x = 5,002,263,300.76/80,810.31
6. Step 6: Final answer
   x = 61,901.30