Finding the Fourth Proportional to 139,837.16, 192,974.82 and 76,174.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,837.16 : 192,974.82 = 76,174.76 : x
2. Step 2: Convert to fraction form
   139,837.16/192,974.82 = 76,174.76/x
3. Step 3: Cross multiply
   139,837.16x = 192,974.82 × 76,174.76
4. Step 4: Simplify right side
   139,837.16x = 14,699,810,599.54
5. Step 5: Solve for x
   x = 14,699,810,599.54/139,837.16
6. Step 6: Final answer
   x = 105,120.92