Finding the Fourth Proportional to 78,298.48, 108,052.68 and 42,488.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,298.48 : 108,052.68 = 42,488.79 : x
2. Step 2: Convert to fraction form
   78,298.48/108,052.68 = 42,488.79/x
3. Step 3: Cross multiply
   78,298.48x = 108,052.68 × 42,488.79
4. Step 4: Simplify right side
   78,298.48x = 4,591,027,629.46
5. Step 5: Solve for x
   x = 4,591,027,629.46/78,298.48
6. Step 6: Final answer
   x = 58,634.95