Finding the Fourth Proportional to 139,730.50, 192,828.09 and 76,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,730.50 : 192,828.09 = 76,064.50 : x
2. Step 2: Convert to fraction form
   139,730.50/192,828.09 = 76,064.50/x
3. Step 3: Cross multiply
   139,730.50x = 192,828.09 × 76,064.50
4. Step 4: Simplify right side
   139,730.50x = 14,667,372,251.81
5. Step 5: Solve for x
   x = 14,667,372,251.81/139,730.50
6. Step 6: Final answer
   x = 104,969.01