Finding the Fourth Proportional to 166,100.49, 249,190.43 and 53,780.83

Step by Step Solution

1. Step 1: Write the proportion equation
   166,100.49 : 249,190.43 = 53,780.83 : x
2. Step 2: Convert to fraction form
   166,100.49/249,190.43 = 53,780.83/x
3. Step 3: Cross multiply
   166,100.49x = 249,190.43 × 53,780.83
4. Step 4: Simplify right side
   166,100.49x = 13,401,667,261.58
5. Step 5: Solve for x
   x = 13,401,667,261.58/166,100.49
6. Step 6: Final answer
   x = 80,684.09