Finding the Fourth Proportional to 120,882.45, 166,779.59 and 72,474.42

Step by Step Solution

1. Step 1: Write the proportion equation
   120,882.45 : 166,779.59 = 72,474.42 : x
2. Step 2: Convert to fraction form
   120,882.45/166,779.59 = 72,474.42/x
3. Step 3: Cross multiply
   120,882.45x = 166,779.59 × 72,474.42
4. Step 4: Simplify right side
   120,882.45x = 12,087,253,690.72
5. Step 5: Solve for x
   x = 12,087,253,690.72/120,882.45
6. Step 6: Final answer
   x = 99,991.80