Finding the Fourth Proportional to 140,386.56, 193,733 and 76,724.34

Step by Step Solution

1. Step 1: Write the proportion equation
   140,386.56 : 193,733 = 76,724.34 : x
2. Step 2: Convert to fraction form
   140,386.56/193,733 = 76,724.34/x
3. Step 3: Cross multiply
   140,386.56x = 193,733 × 76,724.34
4. Step 4: Simplify right side
   140,386.56x = 14,864,036,561.22
5. Step 5: Solve for x
   x = 14,864,036,561.22/140,386.56
6. Step 6: Final answer
   x = 105,879.34