Finding the Fourth Proportional to 78,678.96, 118,016.82 and 19,513.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,678.96 : 118,016.82 = 19,513.98 : x
2. Step 2: Convert to fraction form
   78,678.96/118,016.82 = 19,513.98/x
3. Step 3: Cross multiply
   78,678.96x = 118,016.82 × 19,513.98
4. Step 4: Simplify right side
   78,678.96x = 2,302,977,865.14
5. Step 5: Solve for x
   x = 2,302,977,865.14/78,678.96
6. Step 6: Final answer
   x = 29,270.57