Finding the Fourth Proportional to 72,688.42, 109,078.82 and 37,628.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,688.42 : 109,078.82 = 37,628.12 : x
2. Step 2: Convert to fraction form
   72,688.42/109,078.82 = 37,628.12/x
3. Step 3: Cross multiply
   72,688.42x = 109,078.82 × 37,628.12
4. Step 4: Simplify right side
   72,688.42x = 4,104,430,928.42
5. Step 5: Solve for x
   x = 4,104,430,928.42/72,688.42
6. Step 6: Final answer
   x = 56,466.09