Finding the Fourth Proportional to 86,272.56, 129,265.31 and 30,081.69

Step by Step Solution

1. Step 1: Write the proportion equation
   86,272.56 : 129,265.31 = 30,081.69 : x
2. Step 2: Convert to fraction form
   86,272.56/129,265.31 = 30,081.69/x
3. Step 3: Cross multiply
   86,272.56x = 129,265.31 × 30,081.69
4. Step 4: Simplify right side
   86,272.56x = 3,888,518,832.77
5. Step 5: Solve for x
   x = 3,888,518,832.77/86,272.56
6. Step 6: Final answer
   x = 45,072.49