Finding the Fourth Proportional to 72,904.74, 109,337.46 and 30,785.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,904.74 : 109,337.46 = 30,785.10 : x
2. Step 2: Convert to fraction form
   72,904.74/109,337.46 = 30,785.10/x
3. Step 3: Cross multiply
   72,904.74x = 109,337.46 × 30,785.10
4. Step 4: Simplify right side
   72,904.74x = 3,365,964,639.85
5. Step 5: Solve for x
   x = 3,365,964,639.85/72,904.74
6. Step 6: Final answer
   x = 46,169.35