Finding the Fourth Proportional to 56,914.72, 85,352.04 and 18,953.69

Step by Step Solution

1. Step 1: Write the proportion equation
   56,914.72 : 85,352.04 = 18,953.69 : x
2. Step 2: Convert to fraction form
   56,914.72/85,352.04 = 18,953.69/x
3. Step 3: Cross multiply
   56,914.72x = 85,352.04 × 18,953.69
4. Step 4: Simplify right side
   56,914.72x = 1,617,735,680.27
5. Step 5: Solve for x
   x = 1,617,735,680.27/56,914.72
6. Step 6: Final answer
   x = 28,423.86