Finding the Fourth Proportional to 78,514.15, 108,389.58 and 53,154.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,514.15 : 108,389.58 = 53,154.53 : x
2. Step 2: Convert to fraction form
   78,514.15/108,389.58 = 53,154.53/x
3. Step 3: Cross multiply
   78,514.15x = 108,389.58 × 53,154.53
4. Step 4: Simplify right side
   78,514.15x = 5,761,397,181.80
5. Step 5: Solve for x
   x = 5,761,397,181.80/78,514.15
6. Step 6: Final answer
   x = 73,380.37