Finding the Fourth Proportional to 109,104.56, 163,616.52 and 85,776.56

Step by Step Solution

1. Step 1: Write the proportion equation
   109,104.56 : 163,616.52 = 85,776.56 : x
2. Step 2: Convert to fraction form
   109,104.56/163,616.52 = 85,776.56/x
3. Step 3: Cross multiply
   109,104.56x = 163,616.52 × 85,776.56
4. Step 4: Simplify right side
   109,104.56x = 14,034,462,244.77
5. Step 5: Solve for x
   x = 14,034,462,244.77/109,104.56
6. Step 6: Final answer
   x = 128,633.14