Finding the Fourth Proportional to 79,704.81, 109,872.45 and 65,533.05

Step by Step Solution

1. Step 1: Write the proportion equation
   79,704.81 : 109,872.45 = 65,533.05 : x
2. Step 2: Convert to fraction form
   79,704.81/109,872.45 = 65,533.05/x
3. Step 3: Cross multiply
   79,704.81x = 109,872.45 × 65,533.05
4. Step 4: Simplify right side
   79,704.81x = 7,200,276,759.47
5. Step 5: Solve for x
   x = 7,200,276,759.47/79,704.81
6. Step 6: Final answer
   x = 90,336.79