Finding the Fourth Proportional to 109,308.19, 150,914.94 and 89,213

Step by Step Solution

1. Step 1: Write the proportion equation
   109,308.19 : 150,914.94 = 89,213 : x
2. Step 2: Convert to fraction form
   109,308.19/150,914.94 = 89,213/x
3. Step 3: Cross multiply
   109,308.19x = 150,914.94 × 89,213
4. Step 4: Simplify right side
   109,308.19x = 13,463,574,542.22
5. Step 5: Solve for x
   x = 13,463,574,542.22/109,308.19
6. Step 6: Final answer
   x = 123,170.78