Finding the Fourth Proportional to 70,821.72, 97,732.05 and 38,990.82

Step by Step Solution

1. Step 1: Write the proportion equation
   70,821.72 : 97,732.05 = 38,990.82 : x
2. Step 2: Convert to fraction form
   70,821.72/97,732.05 = 38,990.82/x
3. Step 3: Cross multiply
   70,821.72x = 97,732.05 × 38,990.82
4. Step 4: Simplify right side
   70,821.72x = 3,810,652,769.78
5. Step 5: Solve for x
   x = 3,810,652,769.78/70,821.72
6. Step 6: Final answer
   x = 53,806.27