Finding the Fourth Proportional to 120,885.84, 166,770.71 and 75,485

Step by Step Solution

1. Step 1: Write the proportion equation
   120,885.84 : 166,770.71 = 75,485 : x
2. Step 2: Convert to fraction form
   120,885.84/166,770.71 = 75,485/x
3. Step 3: Cross multiply
   120,885.84x = 166,770.71 × 75,485
4. Step 4: Simplify right side
   120,885.84x = 12,588,687,044.35
5. Step 5: Solve for x
   x = 12,588,687,044.35/120,885.84
6. Step 6: Final answer
   x = 104,136.99