Finding the Fourth Proportional to 139,352.95, 192,293.82 and 78,911.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,352.95 : 192,293.82 = 78,911.96 : x
2. Step 2: Convert to fraction form
   139,352.95/192,293.82 = 78,911.96/x
3. Step 3: Cross multiply
   139,352.95x = 192,293.82 × 78,911.96
4. Step 4: Simplify right side
   139,352.95x = 15,174,282,712.82
5. Step 5: Solve for x
   x = 15,174,282,712.82/139,352.95
6. Step 6: Final answer
   x = 108,891.01