Finding the Fourth Proportional to 139,669.56, 192,747.69 and 76,011.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,669.56 : 192,747.69 = 76,011.30 : x
2. Step 2: Convert to fraction form
   139,669.56/192,747.69 = 76,011.30/x
3. Step 3: Cross multiply
   139,669.56x = 192,747.69 × 76,011.30
4. Step 4: Simplify right side
   139,669.56x = 14,651,002,488.90
5. Step 5: Solve for x
   x = 14,651,002,488.90/139,669.56
6. Step 6: Final answer
   x = 104,897.61