Finding the Fourth Proportional to 51,558, 71,139.24 and 30,339.60

Step by Step Solution

1. Step 1: Write the proportion equation
   51,558 : 71,139.24 = 30,339.60 : x
2. Step 2: Convert to fraction form
   51,558/71,139.24 = 30,339.60/x
3. Step 3: Cross multiply
   51,558x = 71,139.24 × 30,339.60
4. Step 4: Simplify right side
   51,558x = 2,158,336,085.90
5. Step 5: Solve for x
   x = 2,158,336,085.90/51,558
6. Step 6: Final answer
   x = 41,862.29