Finding the Fourth Proportional to 109,307.69, 150,914.25 and 89,212.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,307.69 : 150,914.25 = 89,212.50 : x
2. Step 2: Convert to fraction form
   109,307.69/150,914.25 = 89,212.50/x
3. Step 3: Cross multiply
   109,307.69x = 150,914.25 × 89,212.50
4. Step 4: Simplify right side
   109,307.69x = 13,463,437,528.13
5. Step 5: Solve for x
   x = 13,463,437,528.13/109,307.69
6. Step 6: Final answer
   x = 123,170.09