Finding the Fourth Proportional to 57,339.65, 85,967.89 and 28,894.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,339.65 : 85,967.89 = 28,894.10 : x
2. Step 2: Convert to fraction form
   57,339.65/85,967.89 = 28,894.10/x
3. Step 3: Cross multiply
   57,339.65x = 85,967.89 × 28,894.10
4. Step 4: Simplify right side
   57,339.65x = 2,483,964,308.37
5. Step 5: Solve for x
   x = 2,483,964,308.37/57,339.65
6. Step 6: Final answer
   x = 43,320.18