Finding the Fourth Proportional to 72,579.32, 108,881.73 and 33,140.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,579.32 : 108,881.73 = 33,140.42 : x
2. Step 2: Convert to fraction form
   72,579.32/108,881.73 = 33,140.42/x
3. Step 3: Cross multiply
   72,579.32x = 108,881.73 × 33,140.42
4. Step 4: Simplify right side
   72,579.32x = 3,608,385,718.12
5. Step 5: Solve for x
   x = 3,608,385,718.12/72,579.32
6. Step 6: Final answer
   x = 49,716.45