Finding the Fourth Proportional to 72,150.72, 99,564.30 and 40,313.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,150.72 : 99,564.30 = 40,313.40 : x
2. Step 2: Convert to fraction form
   72,150.72/99,564.30 = 40,313.40/x
3. Step 3: Cross multiply
   72,150.72x = 99,564.30 × 40,313.40
4. Step 4: Simplify right side
   72,150.72x = 4,013,775,451.62
5. Step 5: Solve for x
   x = 4,013,775,451.62/72,150.72
6. Step 6: Final answer
   x = 55,630.43