Finding the Fourth Proportional to 137,667.97, 190,007.81 and 89,962.21

Step by Step Solution

1. Step 1: Write the proportion equation
   137,667.97 : 190,007.81 = 89,962.21 : x
2. Step 2: Convert to fraction form
   137,667.97/190,007.81 = 89,962.21/x
3. Step 3: Cross multiply
   137,667.97x = 190,007.81 × 89,962.21
4. Step 4: Simplify right side
   137,667.97x = 17,093,522,504.86
5. Step 5: Solve for x
   x = 17,093,522,504.86/137,667.97
6. Step 6: Final answer
   x = 124,164.85