Finding the Fourth Proportional to 86,500.35, 129,809.25 and 30,340.04

Step by Step Solution

1. Step 1: Write the proportion equation
   86,500.35 : 129,809.25 = 30,340.04 : x
2. Step 2: Convert to fraction form
   86,500.35/129,809.25 = 30,340.04/x
3. Step 3: Cross multiply
   86,500.35x = 129,809.25 × 30,340.04
4. Step 4: Simplify right side
   86,500.35x = 3,938,417,188.32
5. Step 5: Solve for x
   x = 3,938,417,188.32/86,500.35
6. Step 6: Final answer
   x = 45,530.65