Finding the Fourth Proportional to 139,723.47, 192,813.48 and 76,059.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,723.47 : 192,813.48 = 76,059.90 : x
2. Step 2: Convert to fraction form
   139,723.47/192,813.48 = 76,059.90/x
3. Step 3: Cross multiply
   139,723.47x = 192,813.48 × 76,059.90
4. Step 4: Simplify right side
   139,723.47x = 14,665,374,007.45
5. Step 5: Solve for x
   x = 14,665,374,007.45/139,723.47
6. Step 6: Final answer
   x = 104,959.99