Finding the Fourth Proportional to 139,575.89, 192,664.83 and 82,987.13

Step by Step Solution

1. Step 1: Write the proportion equation
   139,575.89 : 192,664.83 = 82,987.13 : x
2. Step 2: Convert to fraction form
   139,575.89/192,664.83 = 82,987.13/x
3. Step 3: Cross multiply
   139,575.89x = 192,664.83 × 82,987.13
4. Step 4: Simplify right side
   139,575.89x = 15,988,700,330.31
5. Step 5: Solve for x
   x = 15,988,700,330.31/139,575.89
6. Step 6: Final answer
   x = 114,552.03