Finding the Fourth Proportional to 70,992.96, 97,970.72 and 39,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,992.96 : 97,970.72 = 39,162.72 : x
2. Step 2: Convert to fraction form
   70,992.96/97,970.72 = 39,162.72/x
3. Step 3: Cross multiply
   70,992.96x = 97,970.72 × 39,162.72
4. Step 4: Simplify right side
   70,992.96x = 3,836,799,875.56
5. Step 5: Solve for x
   x = 3,836,799,875.56/70,992.96
6. Step 6: Final answer
   x = 54,044.79