Finding the Fourth Proportional to 42,173.46, 63,258.02 and 12,591.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,173.46 : 63,258.02 = 12,591.54 : x
2. Step 2: Convert to fraction form
   42,173.46/63,258.02 = 12,591.54/x
3. Step 3: Cross multiply
   42,173.46x = 63,258.02 × 12,591.54
4. Step 4: Simplify right side
   42,173.46x = 796,515,889.15
5. Step 5: Solve for x
   x = 796,515,889.15/42,173.46
6. Step 6: Final answer
   x = 18,886.66