Finding the Fourth Proportional to 139,554.84, 192,488.10 and 91,792.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,554.84 : 192,488.10 = 91,792.92 : x
2. Step 2: Convert to fraction form
   139,554.84/192,488.10 = 91,792.92/x
3. Step 3: Cross multiply
   139,554.84x = 192,488.10 × 91,792.92
4. Step 4: Simplify right side
   139,554.84x = 17,669,044,764.25
5. Step 5: Solve for x
   x = 17,669,044,764.25/139,554.84
6. Step 6: Final answer
   x = 126,610.05