Finding the Fourth Proportional to 72,147.62, 99,563.56 and 40,316.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,147.62 : 99,563.56 = 40,316.52 : x
2. Step 2: Convert to fraction form
   72,147.62/99,563.56 = 40,316.52/x
3. Step 3: Cross multiply
   72,147.62x = 99,563.56 × 40,316.52
4. Step 4: Simplify right side
   72,147.62x = 4,014,056,258.01
5. Step 5: Solve for x
   x = 4,014,056,258.01/72,147.62
6. Step 6: Final answer
   x = 55,636.71