Finding the Fourth Proportional to 78,636.13, 108,514.38 and 42,823.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,636.13 : 108,514.38 = 42,823.99 : x
2. Step 2: Convert to fraction form
   78,636.13/108,514.38 = 42,823.99/x
3. Step 3: Cross multiply
   78,636.13x = 108,514.38 × 42,823.99
4. Step 4: Simplify right side
   78,636.13x = 4,647,018,723.98
5. Step 5: Solve for x
   x = 4,647,018,723.98/78,636.13
6. Step 6: Final answer
   x = 59,095.21