Finding the Fourth Proportional to 72,556.82, 100,165.98 and 56,388.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72,556.82 : 100,165.98 = 56,388.02 : x
2. Step 2: Convert to fraction form
   72,556.82/100,165.98 = 56,388.02/x
3. Step 3: Cross multiply
   72,556.82x = 100,165.98 × 56,388.02
4. Step 4: Simplify right side
   72,556.82x = 5,648,161,283.56
5. Step 5: Solve for x
   x = 5,648,161,283.56/72,556.82
6. Step 6: Final answer
   x = 77,844.66