Finding the Fourth Proportional to 70,968.03, 97,934.72 and 39,139.89

Step by Step Solution

1. Step 1: Write the proportion equation
   70,968.03 : 97,934.72 = 39,139.89 : x
2. Step 2: Convert to fraction form
   70,968.03/97,934.72 = 39,139.89/x
3. Step 3: Cross multiply
   70,968.03x = 97,934.72 × 39,139.89
4. Step 4: Simplify right side
   70,968.03x = 3,833,153,972.28
5. Step 5: Solve for x
   x = 3,833,153,972.28/70,968.03
6. Step 6: Final answer
   x = 54,012.40