Finding the Fourth Proportional to 72,540.06, 100,105.89 and 40,716.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,540.06 : 100,105.89 = 40,716.48 : x
2. Step 2: Convert to fraction form
   72,540.06/100,105.89 = 40,716.48/x
3. Step 3: Cross multiply
   72,540.06x = 100,105.89 × 40,716.48
4. Step 4: Simplify right side
   72,540.06x = 4,075,959,468.07
5. Step 5: Solve for x
   x = 4,075,959,468.07/72,540.06
6. Step 6: Final answer
   x = 56,189.08