Finding the Fourth Proportional to 30,575,797.05, 42,178,520.61 and 18,177,072.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,575,797.05 : 42,178,520.61 = 18,177,072.12 : x
2. Step 2: Convert to fraction form
   30,575,797.05/42,178,520.61 = 18,177,072.12/x
3. Step 3: Cross multiply
   30,575,797.05x = 42,178,520.61 × 18,177,072.12
4. Step 4: Simplify right side
   30,575,797.05x = 766,682,011,238,195.50
5. Step 5: Solve for x
   x = 766,682,011,238,195.50/30,575,797.05
6. Step 6: Final answer
   x = 25,074,800.50