Finding the Fourth Proportional to 86,569.31, 129,861.37 and 30,404.53

Step by Step Solution

1. Step 1: Write the proportion equation
   86,569.31 : 129,861.37 = 30,404.53 : x
2. Step 2: Convert to fraction form
   86,569.31/129,861.37 = 30,404.53/x
3. Step 3: Cross multiply
   86,569.31x = 129,861.37 × 30,404.53
4. Step 4: Simplify right side
   86,569.31x = 3,948,373,920.01
5. Step 5: Solve for x
   x = 3,948,373,920.01/86,569.31
6. Step 6: Final answer
   x = 45,609.40