Finding the Fourth Proportional to 86,680.14, 129,947.25 and 42,283.98

Step by Step Solution

1. Step 1: Write the proportion equation
   86,680.14 : 129,947.25 = 42,283.98 : x
2. Step 2: Convert to fraction form
   86,680.14/129,947.25 = 42,283.98/x
3. Step 3: Cross multiply
   86,680.14x = 129,947.25 × 42,283.98
4. Step 4: Simplify right side
   86,680.14x = 5,494,686,920.06
5. Step 5: Solve for x
   x = 5,494,686,920.06/86,680.14
6. Step 6: Final answer
   x = 63,390.38