Finding the Fourth Proportional to 74,659.33, 111,987.61 and 18,499.57

Step by Step Solution

1. Step 1: Write the proportion equation
   74,659.33 : 111,987.61 = 18,499.57 : x
2. Step 2: Convert to fraction form
   74,659.33/111,987.61 = 18,499.57/x
3. Step 3: Cross multiply
   74,659.33x = 111,987.61 × 18,499.57
4. Step 4: Simplify right side
   74,659.33x = 2,071,722,630.33
5. Step 5: Solve for x
   x = 2,071,722,630.33/74,659.33
6. Step 6: Final answer
   x = 27,749.01