Finding the Fourth Proportional to 218,976.42, 328,245.93 and 188,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   218,976.42 : 328,245.93 = 188,868.72 : x
2. Step 2: Convert to fraction form
   218,976.42/328,245.93 = 188,868.72/x
3. Step 3: Cross multiply
   218,976.42x = 328,245.93 × 188,868.72
4. Step 4: Simplify right side
   218,976.42x = 61,995,388,644.31
5. Step 5: Solve for x
   x = 61,995,388,644.31/218,976.42
6. Step 6: Final answer
   x = 283,114.45