Finding the Fourth Proportional to 103,454.72, 155,178.98 and 28,579.34

Step by Step Solution

1. Step 1: Write the proportion equation
   103,454.72 : 155,178.98 = 28,579.34 : x
2. Step 2: Convert to fraction form
   103,454.72/155,178.98 = 28,579.34/x
3. Step 3: Cross multiply
   103,454.72x = 155,178.98 × 28,579.34
4. Step 4: Simplify right side
   103,454.72x = 4,434,912,830.27
5. Step 5: Solve for x
   x = 4,434,912,830.27/103,454.72
6. Step 6: Final answer
   x = 42,868.15