Finding the Fourth Proportional to 72,684.81, 108,998.69 and 30,585.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,684.81 : 108,998.69 = 30,585.06 : x
2. Step 2: Convert to fraction form
   72,684.81/108,998.69 = 30,585.06/x
3. Step 3: Cross multiply
   72,684.81x = 108,998.69 × 30,585.06
4. Step 4: Simplify right side
   72,684.81x = 3,333,731,320.65
5. Step 5: Solve for x
   x = 3,333,731,320.65/72,684.81
6. Step 6: Final answer
   x = 45,865.58