Finding the Fourth Proportional to 42,688.91, 64,051.83 and 16,387.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,688.91 : 64,051.83 = 16,387.54 : x
2. Step 2: Convert to fraction form
   42,688.91/64,051.83 = 16,387.54/x
3. Step 3: Cross multiply
   42,688.91x = 64,051.83 × 16,387.54
4. Step 4: Simplify right side
   42,688.91x = 1,049,651,766.07
5. Step 5: Solve for x
   x = 1,049,651,766.07/42,688.91
6. Step 6: Final answer
   x = 24,588.39