Finding the Fourth Proportional to 111,053.60, 166,736.64 and 64,358.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,053.60 : 166,736.64 = 64,358.72 : x
2. Step 2: Convert to fraction form
   111,053.60/166,736.64 = 64,358.72/x
3. Step 3: Cross multiply
   111,053.60x = 166,736.64 × 64,358.72
4. Step 4: Simplify right side
   111,053.60x = 10,730,956,727.50
5. Step 5: Solve for x
   x = 10,730,956,727.50/111,053.60
6. Step 6: Final answer
   x = 96,628.63