Finding the Fourth Proportional to 363,900.50, 545,933.84 and 111,216.95

Step by Step Solution

1. Step 1: Write the proportion equation
   363,900.50 : 545,933.84 = 111,216.95 : x
2. Step 2: Convert to fraction form
   363,900.50/545,933.84 = 111,216.95/x
3. Step 3: Cross multiply
   363,900.50x = 545,933.84 × 111,216.95
4. Step 4: Simplify right side
   363,900.50x = 60,717,093,300.83
5. Step 5: Solve for x
   x = 60,717,093,300.83/363,900.50
6. Step 6: Final answer
   x = 166,850.81