Finding the Fourth Proportional to 139,498.84, 192,410.94 and 91,736.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,498.84 : 192,410.94 = 91,736.92 : x
2. Step 2: Convert to fraction form
   139,498.84/192,410.94 = 91,736.92/x
3. Step 3: Cross multiply
   139,498.84x = 192,410.94 × 91,736.92
4. Step 4: Simplify right side
   139,498.84x = 17,651,187,009.90
5. Step 5: Solve for x
   x = 17,651,187,009.90/139,498.84
6. Step 6: Final answer
   x = 126,532.86