Finding the Fourth Proportional to 139,804.02, 192,931.74 and 76,141.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804.02 : 192,931.74 = 76,141.76 : x
2. Step 2: Convert to fraction form
   139,804.02/192,931.74 = 76,141.76/x
3. Step 3: Cross multiply
   139,804.02x = 192,931.74 × 76,141.76
4. Step 4: Simplify right side
   139,804.02x = 14,690,161,278.80
5. Step 5: Solve for x
   x = 14,690,161,278.80/139,804.02
6. Step 6: Final answer
   x = 105,076.82