Finding the Fourth Proportional to 85,464.62, 128,116.29 and 30,030.38

Step by Step Solution

1. Step 1: Write the proportion equation
   85,464.62 : 128,116.29 = 30,030.38 : x
2. Step 2: Convert to fraction form
   85,464.62/128,116.29 = 30,030.38/x
3. Step 3: Cross multiply
   85,464.62x = 128,116.29 × 30,030.38
4. Step 4: Simplify right side
   85,464.62x = 3,847,380,872.89
5. Step 5: Solve for x
   x = 3,847,380,872.89/85,464.62
6. Step 6: Final answer
   x = 45,017.23