Finding the Fourth Proportional to 120,510.94, 166,285.56 and 75,181.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,510.94 : 166,285.56 = 75,181.72 : x
2. Step 2: Convert to fraction form
   120,510.94/166,285.56 = 75,181.72/x
3. Step 3: Cross multiply
   120,510.94x = 166,285.56 × 75,181.72
4. Step 4: Simplify right side
   120,510.94x = 12,501,634,411.96
5. Step 5: Solve for x
   x = 12,501,634,411.96/120,510.94
6. Step 6: Final answer
   x = 103,738.59