Finding the Fourth Proportional to 78,609.98, 108,481.12 and 42,799.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,609.98 : 108,481.12 = 42,799.92 : x
2. Step 2: Convert to fraction form
   78,609.98/108,481.12 = 42,799.92/x
3. Step 3: Cross multiply
   78,609.98x = 108,481.12 × 42,799.92
4. Step 4: Simplify right side
   78,609.98x = 4,642,983,257.51
5. Step 5: Solve for x
   x = 4,642,983,257.51/78,609.98
6. Step 6: Final answer
   x = 59,063.53