Finding the Fourth Proportional to 72,742.22, 109,013.78 and 54,958.26

Step by Step Solution

1. Step 1: Write the proportion equation
   72,742.22 : 109,013.78 = 54,958.26 : x
2. Step 2: Convert to fraction form
   72,742.22/109,013.78 = 54,958.26/x
3. Step 3: Cross multiply
   72,742.22x = 109,013.78 × 54,958.26
4. Step 4: Simplify right side
   72,742.22x = 5,991,207,664.82
5. Step 5: Solve for x
   x = 5,991,207,664.82/72,742.22
6. Step 6: Final answer
   x = 82,362.18