Finding the Fourth Proportional to 71,171.72, 98,203 and 42,878.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,171.72 : 98,203 = 42,878.96 : x
2. Step 2: Convert to fraction form
   71,171.72/98,203 = 42,878.96/x
3. Step 3: Cross multiply
   71,171.72x = 98,203 × 42,878.96
4. Step 4: Simplify right side
   71,171.72x = 4,210,842,508.88
5. Step 5: Solve for x
   x = 4,210,842,508.88/71,171.72
6. Step 6: Final answer
   x = 59,164.55