Finding the Fourth Proportional to 72,144.83, 99,560.12 and 40,314.26

Step by Step Solution

1. Step 1: Write the proportion equation
   72,144.83 : 99,560.12 = 40,314.26 : x
2. Step 2: Convert to fraction form
   72,144.83/99,560.12 = 40,314.26/x
3. Step 3: Cross multiply
   72,144.83x = 99,560.12 × 40,314.26
4. Step 4: Simplify right side
   72,144.83x = 4,013,692,610.64
5. Step 5: Solve for x
   x = 4,013,692,610.64/72,144.83
6. Step 6: Final answer
   x = 55,633.82