Finding the Fourth Proportional to 120,830.84, 166,737.42 and 67,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   120,830.84 : 166,737.42 = 67,111.28 : x
2. Step 2: Convert to fraction form
   120,830.84/166,737.42 = 67,111.28/x
3. Step 3: Cross multiply
   120,830.84x = 166,737.42 × 67,111.28
4. Step 4: Simplify right side
   120,830.84x = 11,189,961,680.10
5. Step 5: Solve for x
   x = 11,189,961,680.10/120,830.84
6. Step 6: Final answer
   x = 92,608.49