Finding the Fourth Proportional to 72,783.76, 109,138.71 and 33,307.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,783.76 : 109,138.71 = 33,307.05 : x
2. Step 2: Convert to fraction form
   72,783.76/109,138.71 = 33,307.05/x
3. Step 3: Cross multiply
   72,783.76x = 109,138.71 × 33,307.05
4. Step 4: Simplify right side
   72,783.76x = 3,635,088,470.91
5. Step 5: Solve for x
   x = 3,635,088,470.91/72,783.76
6. Step 6: Final answer
   x = 49,943.68