Finding the Fourth Proportional to 109,308.69, 150,915.63 and 89,213.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,308.69 : 150,915.63 = 89,213.50 : x
2. Step 2: Convert to fraction form
   109,308.69/150,915.63 = 89,213.50/x
3. Step 3: Cross multiply
   109,308.69x = 150,915.63 × 89,213.50
4. Step 4: Simplify right side
   109,308.69x = 13,463,711,557.01
5. Step 5: Solve for x
   x = 13,463,711,557.01/109,308.69
6. Step 6: Final answer
   x = 123,171.47