Finding the Fourth Proportional to 159,417.72, 238,962.56 and 70,713

Step by Step Solution

1. Step 1: Write the proportion equation
   159,417.72 : 238,962.56 = 70,713 : x
2. Step 2: Convert to fraction form
   159,417.72/238,962.56 = 70,713/x
3. Step 3: Cross multiply
   159,417.72x = 238,962.56 × 70,713
4. Step 4: Simplify right side
   159,417.72x = 16,897,759,151.72
5. Step 5: Solve for x
   x = 16,897,759,151.72/159,417.72
6. Step 6: Final answer
   x = 105,996.74