Finding the Fourth Proportional to 100,900,790.88, 139,243,086.09 and 54,491,040.33

Step by Step Solution

1. Step 1: Write the proportion equation
   100,900,790.88 : 139,243,086.09 = 54,491,040.33 : x
2. Step 2: Convert to fraction form
   100,900,790.88/139,243,086.09 = 54,491,040.33/x
3. Step 3: Cross multiply
   100,900,790.88x = 139,243,086.09 × 54,491,040.33
4. Step 4: Simplify right side
   100,900,790.88x = 7,587,500,619,803,852
5. Step 5: Solve for x
   x = 7,587,500,619,803,852/100,900,790.88
6. Step 6: Final answer
   x = 75,197,632.78