Finding the Fourth Proportional to 109,728.50, 151,490.58 and 69,476.76

Step by Step Solution

1. Step 1: Write the proportion equation
   109,728.50 : 151,490.58 = 69,476.76 : x
2. Step 2: Convert to fraction form
   109,728.50/151,490.58 = 69,476.76/x
3. Step 3: Cross multiply
   109,728.50x = 151,490.58 × 69,476.76
4. Step 4: Simplify right side
   109,728.50x = 10,525,074,668.92
5. Step 5: Solve for x
   x = 10,525,074,668.92/109,728.50
6. Step 6: Final answer
   x = 95,919.25