Finding the Fourth Proportional to 142,549.46, 213,871.67 and 47,789

Step by Step Solution

1. Step 1: Write the proportion equation
   142,549.46 : 213,871.67 = 47,789 : x
2. Step 2: Convert to fraction form
   142,549.46/213,871.67 = 47,789/x
3. Step 3: Cross multiply
   142,549.46x = 213,871.67 × 47,789
4. Step 4: Simplify right side
   142,549.46x = 10,220,713,237.63
5. Step 5: Solve for x
   x = 10,220,713,237.63/142,549.46
6. Step 6: Final answer
   x = 71,699.42