Finding the Fourth Proportional to 78,268.92, 108,010.28 and 42,458.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,268.92 : 108,010.28 = 42,458.63 : x
2. Step 2: Convert to fraction form
   78,268.92/108,010.28 = 42,458.63/x
3. Step 3: Cross multiply
   78,268.92x = 108,010.28 × 42,458.63
4. Step 4: Simplify right side
   78,268.92x = 4,585,967,762.37
5. Step 5: Solve for x
   x = 4,585,967,762.37/78,268.92
6. Step 6: Final answer
   x = 58,592.45