Finding the Fourth Proportional to 71,635.34, 98,757.98 and 57,148.69

Step by Step Solution

1. Step 1: Write the proportion equation
   71,635.34 : 98,757.98 = 57,148.69 : x
2. Step 2: Convert to fraction form
   71,635.34/98,757.98 = 57,148.69/x
3. Step 3: Cross multiply
   71,635.34x = 98,757.98 × 57,148.69
4. Step 4: Simplify right side
   71,635.34x = 5,643,889,372.35
5. Step 5: Solve for x
   x = 5,643,889,372.35/71,635.34
6. Step 6: Final answer
   x = 78,786.39