Finding the Fourth Proportional to 100,900,790.78, 139,243,085.94 and 54,491,040.22

Step by Step Solution

1. Step 1: Write the proportion equation
   100,900,790.78 : 139,243,085.94 = 54,491,040.22 : x
2. Step 2: Convert to fraction form
   100,900,790.78/139,243,085.94 = 54,491,040.22/x
3. Step 3: Cross multiply
   100,900,790.78x = 139,243,085.94 × 54,491,040.22
4. Step 4: Simplify right side
   100,900,790.78x = 7,587,500,596,313,456
5. Step 5: Solve for x
   x = 7,587,500,596,313,456/100,900,790.78
6. Step 6: Final answer
   x = 75,197,632.62