Finding the Fourth Proportional to 120,884.45, 166,782.34 and 72,476.42

Step by Step Solution

1. Step 1: Write the proportion equation
   120,884.45 : 166,782.34 = 72,476.42 : x
2. Step 2: Convert to fraction form
   120,884.45/166,782.34 = 72,476.42/x
3. Step 3: Cross multiply
   120,884.45x = 166,782.34 × 72,476.42
4. Step 4: Simplify right side
   120,884.45x = 12,087,786,922.42
5. Step 5: Solve for x
   x = 12,087,786,922.42/120,884.45
6. Step 6: Final answer
   x = 99,994.56