Finding the Fourth Proportional to 70,971.72, 97,931.34 and 39,141.96

Step by Step Solution

1. Step 1: Write the proportion equation
   70,971.72 : 97,931.34 = 39,141.96 : x
2. Step 2: Convert to fraction form
   70,971.72/97,931.34 = 39,141.96/x
3. Step 3: Cross multiply
   70,971.72x = 97,931.34 × 39,141.96
4. Step 4: Simplify right side
   70,971.72x = 3,833,224,593.03
5. Step 5: Solve for x
   x = 3,833,224,593.03/70,971.72
6. Step 6: Final answer
   x = 54,010.59