Finding the Fourth Proportional to 78,456.44, 108,272 and 42,648.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456.44 : 108,272 = 42,648.88 : x
2. Step 2: Convert to fraction form
   78,456.44/108,272 = 42,648.88/x
3. Step 3: Cross multiply
   78,456.44x = 108,272 × 42,648.88
4. Step 4: Simplify right side
   78,456.44x = 4,617,679,535.36
5. Step 5: Solve for x
   x = 4,617,679,535.36/78,456.44
6. Step 6: Final answer
   x = 58,856.60