Finding the Fourth Proportional to 71,499.20, 98,667.02 and 39,233.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,499.20 : 98,667.02 = 39,233.72 : x
2. Step 2: Convert to fraction form
   71,499.20/98,667.02 = 39,233.72/x
3. Step 3: Cross multiply
   71,499.20x = 98,667.02 × 39,233.72
4. Step 4: Simplify right side
   71,499.20x = 3,871,074,386.74
5. Step 5: Solve for x
   x = 3,871,074,386.74/71,499.20
6. Step 6: Final answer
   x = 54,141.50