Finding the Fourth Proportional to 139,380.98, 192,345.98 and 75,718.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,380.98 : 192,345.98 = 75,718.83 : x
2. Step 2: Convert to fraction form
   139,380.98/192,345.98 = 75,718.83/x
3. Step 3: Cross multiply
   139,380.98x = 192,345.98 × 75,718.83
4. Step 4: Simplify right side
   139,380.98x = 14,564,212,560.80
5. Step 5: Solve for x
   x = 14,564,212,560.80/139,380.98
6. Step 6: Final answer
   x = 104,492.11