Finding the Fourth Proportional to 139,731.75, 192,878.42 and 83,141.91

Step by Step Solution

1. Step 1: Write the proportion equation
   139,731.75 : 192,878.42 = 83,141.91 : x
2. Step 2: Convert to fraction form
   139,731.75/192,878.42 = 83,141.91/x
3. Step 3: Cross multiply
   139,731.75x = 192,878.42 × 83,141.91
4. Step 4: Simplify right side
   139,731.75x = 16,036,279,820.87
5. Step 5: Solve for x
   x = 16,036,279,820.87/139,731.75
6. Step 6: Final answer
   x = 114,764.75