Finding the Fourth Proportional to 172,667.77, 257,836.48 and 141,139.42

Step by Step Solution

1. Step 1: Write the proportion equation
   172,667.77 : 257,836.48 = 141,139.42 : x
2. Step 2: Convert to fraction form
   172,667.77/257,836.48 = 141,139.42/x
3. Step 3: Cross multiply
   172,667.77x = 257,836.48 × 141,139.42
4. Step 4: Simplify right side
   172,667.77x = 36,390,890,244.60
5. Step 5: Solve for x
   x = 36,390,890,244.60/172,667.77
6. Step 6: Final answer
   x = 210,756.71