Finding the Fourth Proportional to 86,851.58, 130,287.87 and 30,680.19

Step by Step Solution

1. Step 1: Write the proportion equation
   86,851.58 : 130,287.87 = 30,680.19 : x
2. Step 2: Convert to fraction form
   86,851.58/130,287.87 = 30,680.19/x
3. Step 3: Cross multiply
   86,851.58x = 130,287.87 × 30,680.19
4. Step 4: Simplify right side
   86,851.58x = 3,997,256,117.72
5. Step 5: Solve for x
   x = 3,997,256,117.72/86,851.58
6. Step 6: Final answer
   x = 46,023.99