Finding the Fourth Proportional to 72,147.94, 99,562.30 and 40,317.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,147.94 : 99,562.30 = 40,317.10 : x
2. Step 2: Convert to fraction form
   72,147.94/99,562.30 = 40,317.10/x
3. Step 3: Cross multiply
   72,147.94x = 99,562.30 × 40,317.10
4. Step 4: Simplify right side
   72,147.94x = 4,014,062,855.63
5. Step 5: Solve for x
   x = 4,014,062,855.63/72,147.94
6. Step 6: Final answer
   x = 55,636.56