Finding the Fourth Proportional to 78,863.50, 118,294.59 and 19,698.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,863.50 : 118,294.59 = 19,698.77 : x
2. Step 2: Convert to fraction form
   78,863.50/118,294.59 = 19,698.77/x
3. Step 3: Cross multiply
   78,863.50x = 118,294.59 × 19,698.77
4. Step 4: Simplify right side
   78,863.50x = 2,330,257,920.65
5. Step 5: Solve for x
   x = 2,330,257,920.65/78,863.50
6. Step 6: Final answer
   x = 29,547.99