Finding the Fourth Proportional to 139,344,831.78, 192,301,408.56 and 76,626,071.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,344,831.78 : 192,301,408.56 = 76,626,071.76 : x
2. Step 2: Convert to fraction form
   139,344,831.78/192,301,408.56 = 76,626,071.76/x
3. Step 3: Cross multiply
   139,344,831.78x = 192,301,408.56 × 76,626,071.76
4. Step 4: Simplify right side
   139,344,831.78x = 14,735,301,531,867,640
5. Step 5: Solve for x
   x = 14,735,301,531,867,640/139,344,831.78
6. Step 6: Final answer
   x = 105,747,025.88