Finding the Fourth Proportional to 71,971.72, 107,945.34 and 19,369.48

Step by Step Solution

1. Step 1: Write the proportion equation
   71,971.72 : 107,945.34 = 19,369.48 : x
2. Step 2: Convert to fraction form
   71,971.72/107,945.34 = 19,369.48/x
3. Step 3: Cross multiply
   71,971.72x = 107,945.34 × 19,369.48
4. Step 4: Simplify right side
   71,971.72x = 2,090,845,104.22
5. Step 5: Solve for x
   x = 2,090,845,104.22/71,971.72
6. Step 6: Final answer
   x = 29,050.93