Finding the Fourth Proportional to 171,421.89, 257,298.69 and 82,737.84

Step by Step Solution

1. Step 1: Write the proportion equation
   171,421.89 : 257,298.69 = 82,737.84 : x
2. Step 2: Convert to fraction form
   171,421.89/257,298.69 = 82,737.84/x
3. Step 3: Cross multiply
   171,421.89x = 257,298.69 × 82,737.84
4. Step 4: Simplify right side
   171,421.89x = 21,288,337,845.43
5. Step 5: Solve for x
   x = 21,288,337,845.43/171,421.89
6. Step 6: Final answer
   x = 124,186.81