Finding the Fourth Proportional to 120,863.32, 166,737.72 and 80,537.74

Step by Step Solution

1. Step 1: Write the proportion equation
   120,863.32 : 166,737.72 = 80,537.74 : x
2. Step 2: Convert to fraction form
   120,863.32/166,737.72 = 80,537.74/x
3. Step 3: Cross multiply
   120,863.32x = 166,737.72 × 80,537.74
4. Step 4: Simplify right side
   120,863.32x = 13,428,679,141.55
5. Step 5: Solve for x
   x = 13,428,679,141.55/120,863.32
6. Step 6: Final answer
   x = 111,106.32