Finding the Fourth Proportional to 86,185.22, 129,245.83 and 30,010.91

Step by Step Solution

1. Step 1: Write the proportion equation
   86,185.22 : 129,245.83 = 30,010.91 : x
2. Step 2: Convert to fraction form
   86,185.22/129,245.83 = 30,010.91/x
3. Step 3: Cross multiply
   86,185.22x = 129,245.83 × 30,010.91
4. Step 4: Simplify right side
   86,185.22x = 3,878,784,250.75
5. Step 5: Solve for x
   x = 3,878,784,250.75/86,185.22
6. Step 6: Final answer
   x = 45,005.22