Finding the Fourth Proportional to 78,458.28, 108,273 and 42,648.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,458.28 : 108,273 = 42,648.24 : x
2. Step 2: Convert to fraction form
   78,458.28/108,273 = 42,648.24/x
3. Step 3: Cross multiply
   78,458.28x = 108,273 × 42,648.24
4. Step 4: Simplify right side
   78,458.28x = 4,617,652,889.52
5. Step 5: Solve for x
   x = 4,617,652,889.52/78,458.28
6. Step 6: Final answer
   x = 58,854.88