Finding the Fourth Proportional to 71,498.38, 98,667.84 and 39,667.54

Step by Step Solution

1. Step 1: Write the proportion equation
   71,498.38 : 98,667.84 = 39,667.54 : x
2. Step 2: Convert to fraction form
   71,498.38/98,667.84 = 39,667.54/x
3. Step 3: Cross multiply
   71,498.38x = 98,667.84 × 39,667.54
4. Step 4: Simplify right side
   71,498.38x = 3,913,910,489.91
5. Step 5: Solve for x
   x = 3,913,910,489.91/71,498.38
6. Step 6: Final answer
   x = 54,741.25