Finding the Fourth Proportional to 72,762.72, 109,186 and 30,639.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,762.72 : 109,186 = 30,639.52 : x
2. Step 2: Convert to fraction form
   72,762.72/109,186 = 30,639.52/x
3. Step 3: Cross multiply
   72,762.72x = 109,186 × 30,639.52
4. Step 4: Simplify right side
   72,762.72x = 3,345,406,630.72
5. Step 5: Solve for x
   x = 3,345,406,630.72/72,762.72
6. Step 6: Final answer
   x = 45,976.93