Finding the Fourth Proportional to 139,250.04, 192,151.02 and 78,810.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,250.04 : 192,151.02 = 78,810.18 : x
2. Step 2: Convert to fraction form
   139,250.04/192,151.02 = 78,810.18/x
3. Step 3: Cross multiply
   139,250.04x = 192,151.02 × 78,810.18
4. Step 4: Simplify right side
   139,250.04x = 15,143,456,473.38
5. Step 5: Solve for x
   x = 15,143,456,473.38/139,250.04
6. Step 6: Final answer
   x = 108,750.11