Finding the Fourth Proportional to 139,053.84, 191,792.34 and 91,289.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,053.84 : 191,792.34 = 91,289.76 : x
2. Step 2: Convert to fraction form
   139,053.84/191,792.34 = 91,289.76/x
3. Step 3: Cross multiply
   139,053.84x = 191,792.34 × 91,289.76
4. Step 4: Simplify right side
   139,053.84x = 17,508,676,688.44
5. Step 5: Solve for x
   x = 17,508,676,688.44/139,053.84
6. Step 6: Final answer
   x = 125,912.93