Finding the Fourth Proportional to 111,588.72, 154,065.24 and 69,209.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111,588.72 : 154,065.24 = 69,209.52 : x
2. Step 2: Convert to fraction form
   111,588.72/154,065.24 = 69,209.52/x
3. Step 3: Cross multiply
   111,588.72x = 154,065.24 × 69,209.52
4. Step 4: Simplify right side
   111,588.72x = 10,662,781,309.08
5. Step 5: Solve for x
   x = 10,662,781,309.08/111,588.72
6. Step 6: Final answer
   x = 95,554.29