Finding the Fourth Proportional to 72,904.24, 109,336.70 and 30,784.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,904.24 : 109,336.70 = 30,784.60 : x
2. Step 2: Convert to fraction form
   72,904.24/109,336.70 = 30,784.60/x
3. Step 3: Cross multiply
   72,904.24x = 109,336.70 × 30,784.60
4. Step 4: Simplify right side
   72,904.24x = 3,365,886,574.82
5. Step 5: Solve for x
   x = 3,365,886,574.82/72,904.24
6. Step 6: Final answer
   x = 46,168.60