Finding the Fourth Proportional to 80,553.81, 120,870.42 and 36,212.79

Step by Step Solution

1. Step 1: Write the proportion equation
   80,553.81 : 120,870.42 = 36,212.79 : x
2. Step 2: Convert to fraction form
   80,553.81/120,870.42 = 36,212.79/x
3. Step 3: Cross multiply
   80,553.81x = 120,870.42 × 36,212.79
4. Step 4: Simplify right side
   80,553.81x = 4,377,055,136.67
5. Step 5: Solve for x
   x = 4,377,055,136.67/80,553.81
6. Step 6: Final answer
   x = 54,337.03