Finding the Fourth Proportional to 282,109.10, 389,307.06 and 154,784.59

Step by Step Solution

1. Step 1: Write the proportion equation
   282,109.10 : 389,307.06 = 154,784.59 : x
2. Step 2: Convert to fraction form
   282,109.10/389,307.06 = 154,784.59/x
3. Step 3: Cross multiply
   282,109.10x = 389,307.06 × 154,784.59
4. Step 4: Simplify right side
   282,109.10x = 60,258,732,692.94
5. Step 5: Solve for x
   x = 60,258,732,692.94/282,109.10
6. Step 6: Final answer
   x = 213,600.82