Finding the Fourth Proportional to 59,310.09, 81,877.61 and 40,290.48

Step by Step Solution

1. Step 1: Write the proportion equation
   59,310.09 : 81,877.61 = 40,290.48 : x
2. Step 2: Convert to fraction form
   59,310.09/81,877.61 = 40,290.48/x
3. Step 3: Cross multiply
   59,310.09x = 81,877.61 × 40,290.48
4. Step 4: Simplify right side
   59,310.09x = 3,298,888,208.15
5. Step 5: Solve for x
   x = 3,298,888,208.15/59,310.09
6. Step 6: Final answer
   x = 55,621.03