Finding the Fourth Proportional to 139,545,258,272.72, 192,571,476,793.80 and 76,180,484,960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,545,258,272.72 : 192,571,476,793.80 = 76,180,484,960.72 : x
2. Step 2: Convert to fraction form
   139,545,258,272.72/192,571,476,793.80 = 76,180,484,960.72/x
3. Step 3: Cross multiply
   139,545,258,272.72x = 192,571,476,793.80 × 76,180,484,960.72
4. Step 4: Simplify right side
   139,545,258,272.72x = 14,670,188,491,753,721,430,016
5. Step 5: Solve for x
   x = 14,670,188,491,753,721,430,016/139,545,258,272.72
6. Step 6: Final answer
   x = 105,128,534,450.69