Finding the Fourth Proportional to 70,964.96, 97,929.83 and 39,131.78

Step by Step Solution

1. Step 1: Write the proportion equation
   70,964.96 : 97,929.83 = 39,131.78 : x
2. Step 2: Convert to fraction form
   70,964.96/97,929.83 = 39,131.78/x
3. Step 3: Cross multiply
   70,964.96x = 97,929.83 × 39,131.78
4. Step 4: Simplify right side
   70,964.96x = 3,832,168,367.34
5. Step 5: Solve for x
   x = 3,832,168,367.34/70,964.96
6. Step 6: Final answer
   x = 54,000.85