Finding the Fourth Proportional to 78,016.94, 107,663.23 and 42,206.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,016.94 : 107,663.23 = 42,206.98 : x
2. Step 2: Convert to fraction form
   78,016.94/107,663.23 = 42,206.98/x
3. Step 3: Cross multiply
   78,016.94x = 107,663.23 × 42,206.98
4. Step 4: Simplify right side
   78,016.94x = 4,544,139,795.35
5. Step 5: Solve for x
   x = 4,544,139,795.35/78,016.94
6. Step 6: Final answer
   x = 58,245.55