Finding the Fourth Proportional to 71,656.56, 98,886.72 and 39,828.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,656.56 : 98,886.72 = 39,828.96 : x
2. Step 2: Convert to fraction form
   71,656.56/98,886.72 = 39,828.96/x
3. Step 3: Cross multiply
   71,656.56x = 98,886.72 × 39,828.96
4. Step 4: Simplify right side
   71,656.56x = 3,938,555,215.41
5. Step 5: Solve for x
   x = 3,938,555,215.41/71,656.56
6. Step 6: Final answer
   x = 54,964.34