Finding the Fourth Proportional to 139,833.98, 192,969.90 and 76,171.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,833.98 : 192,969.90 = 76,171.76 : x
2. Step 2: Convert to fraction form
   139,833.98/192,969.90 = 76,171.76/x
3. Step 3: Cross multiply
   139,833.98x = 192,969.90 × 76,171.76
4. Step 4: Simplify right side
   139,833.98x = 14,698,856,910.02
5. Step 5: Solve for x
   x = 14,698,856,910.02/139,833.98
6. Step 6: Final answer
   x = 105,116.49