Finding the Fourth Proportional to 111,946.78, 154,478.71 and 63,549.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111,946.78 : 154,478.71 = 63,549.69 : x
2. Step 2: Convert to fraction form
   111,946.78/154,478.71 = 63,549.69/x
3. Step 3: Cross multiply
   111,946.78x = 154,478.71 × 63,549.69
4. Step 4: Simplify right side
   111,946.78x = 9,817,074,132.10
5. Step 5: Solve for x
   x = 9,817,074,132.10/111,946.78
6. Step 6: Final answer
   x = 87,694.12