Finding the Fourth Proportional to 111,747.50, 154,275.08 and 89,013.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,747.50 : 154,275.08 = 89,013.63 : x
2. Step 2: Convert to fraction form
   111,747.50/154,275.08 = 89,013.63/x
3. Step 3: Cross multiply
   111,747.50x = 154,275.08 × 89,013.63
4. Step 4: Simplify right side
   111,747.50x = 13,732,585,523.51
5. Step 5: Solve for x
   x = 13,732,585,523.51/111,747.50
6. Step 6: Final answer
   x = 122,889.42