Finding the Fourth Proportional to 86,278.31, 129,476.59 and 30,118.43

Step by Step Solution

1. Step 1: Write the proportion equation
   86,278.31 : 129,476.59 = 30,118.43 : x
2. Step 2: Convert to fraction form
   86,278.31/129,476.59 = 30,118.43/x
3. Step 3: Cross multiply
   86,278.31x = 129,476.59 × 30,118.43
4. Step 4: Simplify right side
   86,278.31x = 3,899,632,030.37
5. Step 5: Solve for x
   x = 3,899,632,030.37/86,278.31
6. Step 6: Final answer
   x = 45,198.29