Finding the Fourth Proportional to 139,073.56, 191,895.86 and 81,722.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,073.56 : 191,895.86 = 81,722.22 : x
2. Step 2: Convert to fraction form
   139,073.56/191,895.86 = 81,722.22/x
3. Step 3: Cross multiply
   139,073.56x = 191,895.86 × 81,722.22
4. Step 4: Simplify right side
   139,073.56x = 15,682,155,688.01
5. Step 5: Solve for x
   x = 15,682,155,688.01/139,073.56
6. Step 6: Final answer
   x = 112,761.59