Finding the Fourth Proportional to 72,819.60, 109,241.85 and 33,380.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,819.60 : 109,241.85 = 33,380.09 : x
2. Step 2: Convert to fraction form
   72,819.60/109,241.85 = 33,380.09/x
3. Step 3: Cross multiply
   72,819.60x = 109,241.85 × 33,380.09
4. Step 4: Simplify right side
   72,819.60x = 3,646,502,784.77
5. Step 5: Solve for x
   x = 3,646,502,784.77/72,819.60
6. Step 6: Final answer
   x = 50,075.84