Finding the Fourth Proportional to 72,639.39, 108,724.72 and 37,530.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,639.39 : 108,724.72 = 37,530.75 : x
2. Step 2: Convert to fraction form
   72,639.39/108,724.72 = 37,530.75/x
3. Step 3: Cross multiply
   72,639.39x = 108,724.72 × 37,530.75
4. Step 4: Simplify right side
   72,639.39x = 4,080,520,285.14
5. Step 5: Solve for x
   x = 4,080,520,285.14/72,639.39
6. Step 6: Final answer
   x = 56,175.04