Finding the Fourth Proportional to 72,667.96, 100,271.18 and 40,399.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,667.96 : 100,271.18 = 40,399.99 : x
2. Step 2: Convert to fraction form
   72,667.96/100,271.18 = 40,399.99/x
3. Step 3: Cross multiply
   72,667.96x = 100,271.18 × 40,399.99
4. Step 4: Simplify right side
   72,667.96x = 4,050,954,519.61
5. Step 5: Solve for x
   x = 4,050,954,519.61/72,667.96
6. Step 6: Final answer
   x = 55,746.09