Finding the Fourth Proportional to 139,505.82, 192,584.16 and 89,233.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,505.82 : 192,584.16 = 89,233.98 : x
2. Step 2: Convert to fraction form
   139,505.82/192,584.16 = 89,233.98/x
3. Step 3: Cross multiply
   139,505.82x = 192,584.16 × 89,233.98
4. Step 4: Simplify right side
   139,505.82x = 17,185,051,081.76
5. Step 5: Solve for x
   x = 17,185,051,081.76/139,505.82
6. Step 6: Final answer
   x = 123,185.19