Finding the Fourth Proportional to 139,987.30, 193,183.38 and 76,326.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,987.30 : 193,183.38 = 76,326.16 : x
2. Step 2: Convert to fraction form
   139,987.30/193,183.38 = 76,326.16/x
3. Step 3: Cross multiply
   139,987.30x = 193,183.38 × 76,326.16
4. Step 4: Simplify right side
   139,987.30x = 14,744,945,571.22
5. Step 5: Solve for x
   x = 14,744,945,571.22/139,987.30
6. Step 6: Final answer
   x = 105,330.59