Finding the Fourth Proportional to 120,353.02, 166,034.88 and 72,579.82

Step by Step Solution

1. Step 1: Write the proportion equation
   120,353.02 : 166,034.88 = 72,579.82 : x
2. Step 2: Convert to fraction form
   120,353.02/166,034.88 = 72,579.82/x
3. Step 3: Cross multiply
   120,353.02x = 166,034.88 × 72,579.82
4. Step 4: Simplify right side
   120,353.02x = 12,050,781,704.12
5. Step 5: Solve for x
   x = 12,050,781,704.12/120,353.02
6. Step 6: Final answer
   x = 100,128.62