Finding the Fourth Proportional to 72,641.16, 108,968.01 and 20,050.65

Step by Step Solution

1. Step 1: Write the proportion equation
   72,641.16 : 108,968.01 = 20,050.65 : x
2. Step 2: Convert to fraction form
   72,641.16/108,968.01 = 20,050.65/x
3. Step 3: Cross multiply
   72,641.16x = 108,968.01 × 20,050.65
4. Step 4: Simplify right side
   72,641.16x = 2,184,879,429.71
5. Step 5: Solve for x
   x = 2,184,879,429.71/72,641.16
6. Step 6: Final answer
   x = 30,077.71