Finding the Fourth Proportional to 139,282.51, 192,214.46 and 78,851.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,282.51 : 192,214.46 = 78,851.92 : x
2. Step 2: Convert to fraction form
   139,282.51/192,214.46 = 78,851.92/x
3. Step 3: Cross multiply
   139,282.51x = 192,214.46 × 78,851.92
4. Step 4: Simplify right side
   139,282.51x = 15,156,479,222.76
5. Step 5: Solve for x
   x = 15,156,479,222.76/139,282.51
6. Step 6: Final answer
   x = 108,818.25