Finding the Fourth Proportional to 218,908.05, 302,089.01 and 123,414.72

Step by Step Solution

1. Step 1: Write the proportion equation
   218,908.05 : 302,089.01 = 123,414.72 : x
2. Step 2: Convert to fraction form
   218,908.05/302,089.01 = 123,414.72/x
3. Step 3: Cross multiply
   218,908.05x = 302,089.01 × 123,414.72
4. Step 4: Simplify right side
   218,908.05x = 37,282,229,967.15
5. Step 5: Solve for x
   x = 37,282,229,967.15/218,908.05
6. Step 6: Final answer
   x = 170,310.00