Finding the Fourth Proportional to 120,355.83, 166,096.76 and 72,608.16

Step by Step Solution

1. Step 1: Write the proportion equation
   120,355.83 : 166,096.76 = 72,608.16 : x
2. Step 2: Convert to fraction form
   120,355.83/166,096.76 = 72,608.16/x
3. Step 3: Cross multiply
   120,355.83x = 166,096.76 × 72,608.16
4. Step 4: Simplify right side
   120,355.83x = 12,059,980,125.56
5. Step 5: Solve for x
   x = 12,059,980,125.56/120,355.83
6. Step 6: Final answer
   x = 100,202.71