Finding the Fourth Proportional to 139,782.88, 192,903.83 and 76,124.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,782.88 : 192,903.83 = 76,124.17 : x
2. Step 2: Convert to fraction form
   139,782.88/192,903.83 = 76,124.17/x
3. Step 3: Cross multiply
   139,782.88x = 192,903.83 × 76,124.17
4. Step 4: Simplify right side
   139,782.88x = 14,684,643,948.57
5. Step 5: Solve for x
   x = 14,684,643,948.57/139,782.88
6. Step 6: Final answer
   x = 105,053.24