Finding the Fourth Proportional to 56,219.57, 84,301.82 and 18,766.79

Step by Step Solution

1. Step 1: Write the proportion equation
   56,219.57 : 84,301.82 = 18,766.79 : x
2. Step 2: Convert to fraction form
   56,219.57/84,301.82 = 18,766.79/x
3. Step 3: Cross multiply
   56,219.57x = 84,301.82 × 18,766.79
4. Step 4: Simplify right side
   56,219.57x = 1,582,074,458.72
5. Step 5: Solve for x
   x = 1,582,074,458.72/56,219.57
6. Step 6: Final answer
   x = 28,140.99