Finding the Fourth Proportional to 86,308.34, 129,493.58 and 30,156.71

Step by Step Solution

1. Step 1: Write the proportion equation
   86,308.34 : 129,493.58 = 30,156.71 : x
2. Step 2: Convert to fraction form
   86,308.34/129,493.58 = 30,156.71/x
3. Step 3: Cross multiply
   86,308.34x = 129,493.58 × 30,156.71
4. Step 4: Simplify right side
   86,308.34x = 3,905,099,540.67
5. Step 5: Solve for x
   x = 3,905,099,540.67/86,308.34
6. Step 6: Final answer
   x = 45,245.91