Finding the Fourth Proportional to 78,469.29, 108,397.98 and 71,383.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.29 : 108,397.98 = 71,383.41 : x
2. Step 2: Convert to fraction form
   78,469.29/108,397.98 = 71,383.41/x
3. Step 3: Cross multiply
   78,469.29x = 108,397.98 × 71,383.41
4. Step 4: Simplify right side
   78,469.29x = 7,737,817,449.51
5. Step 5: Solve for x
   x = 7,737,817,449.51/78,469.29
6. Step 6: Final answer
   x = 98,609.50