Finding the Fourth Proportional to 71,667.09, 98,902.94 and 39,403.06

Step by Step Solution

1. Step 1: Write the proportion equation
   71,667.09 : 98,902.94 = 39,403.06 : x
2. Step 2: Convert to fraction form
   71,667.09/98,902.94 = 39,403.06/x
3. Step 3: Cross multiply
   71,667.09x = 98,902.94 × 39,403.06
4. Step 4: Simplify right side
   71,667.09x = 3,897,078,479.00
5. Step 5: Solve for x
   x = 3,897,078,479.00/71,667.09
6. Step 6: Final answer
   x = 54,377.52