Finding the Fourth Proportional to 218,916.87, 302,123.61 and 123,443.34

Step by Step Solution

1. Step 1: Write the proportion equation
   218,916.87 : 302,123.61 = 123,443.34 : x
2. Step 2: Convert to fraction form
   218,916.87/302,123.61 = 123,443.34/x
3. Step 3: Cross multiply
   218,916.87x = 302,123.61 × 123,443.34
4. Step 4: Simplify right side
   218,916.87x = 37,295,147,511.26
5. Step 5: Solve for x
   x = 37,295,147,511.26/218,916.87
6. Step 6: Final answer
   x = 170,362.14