Finding the Fourth Proportional to 109,494.40, 164,246.46 and 42,928.60

Step by Step Solution

1. Step 1: Write the proportion equation
   109,494.40 : 164,246.46 = 42,928.60 : x
2. Step 2: Convert to fraction form
   109,494.40/164,246.46 = 42,928.60/x
3. Step 3: Cross multiply
   109,494.40x = 164,246.46 × 42,928.60
4. Step 4: Simplify right side
   109,494.40x = 7,050,870,582.76
5. Step 5: Solve for x
   x = 7,050,870,582.76/109,494.40
6. Step 6: Final answer
   x = 64,394.81