Finding the Fourth Proportional to 42,810.81, 64,200.24 and 14,722.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,810.81 : 64,200.24 = 14,722.91 : x
2. Step 2: Convert to fraction form
   42,810.81/64,200.24 = 14,722.91/x
3. Step 3: Cross multiply
   42,810.81x = 64,200.24 × 14,722.91
4. Step 4: Simplify right side
   42,810.81x = 945,214,355.50
5. Step 5: Solve for x
   x = 945,214,355.50/42,810.81
6. Step 6: Final answer
   x = 22,078.87