Finding the Fourth Proportional to 72,830.16, 109,288.98 and 30,707.64

Step by Step Solution

1. Step 1: Write the proportion equation
   72,830.16 : 109,288.98 = 30,707.64 : x
2. Step 2: Convert to fraction form
   72,830.16/109,288.98 = 30,707.64/x
3. Step 3: Cross multiply
   72,830.16x = 109,288.98 × 30,707.64
4. Step 4: Simplify right side
   72,830.16x = 3,356,006,653.81
5. Step 5: Solve for x
   x = 3,356,006,653.81/72,830.16
6. Step 6: Final answer
   x = 46,079.90