Finding the Fourth Proportional to 71,328.51, 98,434.89 and 39,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,328.51 : 98,434.89 = 39,064.50 : x
2. Step 2: Convert to fraction form
   71,328.51/98,434.89 = 39,064.50/x
3. Step 3: Cross multiply
   71,328.51x = 98,434.89 × 39,064.50
4. Step 4: Simplify right side
   71,328.51x = 3,845,309,760.41
5. Step 5: Solve for x
   x = 3,845,309,760.41/71,328.51
6. Step 6: Final answer
   x = 53,909.86