Finding the Fourth Proportional to 72,940.30, 109,329.14 and 30,807.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,940.30 : 109,329.14 = 30,807.74 : x
2. Step 2: Convert to fraction form
   72,940.30/109,329.14 = 30,807.74/x
3. Step 3: Cross multiply
   72,940.30x = 109,329.14 × 30,807.74
4. Step 4: Simplify right side
   72,940.30x = 3,368,184,069.89
5. Step 5: Solve for x
   x = 3,368,184,069.89/72,940.30
6. Step 6: Final answer
   x = 46,177.27