Finding the Fourth Proportional to 72,770.40, 109,123.20 and 33,339.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,770.40 : 109,123.20 = 33,339.60 : x
2. Step 2: Convert to fraction form
   72,770.40/109,123.20 = 33,339.60/x
3. Step 3: Cross multiply
   72,770.40x = 109,123.20 × 33,339.60
4. Step 4: Simplify right side
   72,770.40x = 3,638,123,838.72
5. Step 5: Solve for x
   x = 3,638,123,838.72/72,770.40
6. Step 6: Final answer
   x = 49,994.56