Finding the Fourth Proportional to 53,196.20, 79,697.10 and 43,281.80

Step by Step Solution

1. Step 1: Write the proportion equation
   53,196.20 : 79,697.10 = 43,281.80 : x
2. Step 2: Convert to fraction form
   53,196.20/79,697.10 = 43,281.80/x
3. Step 3: Cross multiply
   53,196.20x = 79,697.10 × 43,281.80
4. Step 4: Simplify right side
   53,196.20x = 3,449,433,942.78
5. Step 5: Solve for x
   x = 3,449,433,942.78/53,196.20
6. Step 6: Final answer
   x = 64,843.62