Finding the Fourth Proportional to 139,545,258,271.72, 192,571,476,792.42 and 76,180,484,959.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,545,258,271.72 : 192,571,476,792.42 = 76,180,484,959.72 : x
2. Step 2: Convert to fraction form
   139,545,258,271.72/192,571,476,792.42 = 76,180,484,959.72/x
3. Step 3: Cross multiply
   139,545,258,271.72x = 192,571,476,792.42 × 76,180,484,959.72
4. Step 4: Simplify right side
   139,545,258,271.72x = 14,670,188,491,456,022,315,008
5. Step 5: Solve for x
   x = 14,670,188,491,456,022,315,008/139,545,258,271.72
6. Step 6: Final answer
   x = 105,128,534,449.31