Finding the Fourth Proportional to 42,986.05, 64,475.25 and 14,905.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,986.05 : 64,475.25 = 14,905.47 : x
2. Step 2: Convert to fraction form
   42,986.05/64,475.25 = 14,905.47/x
3. Step 3: Cross multiply
   42,986.05x = 64,475.25 × 14,905.47
4. Step 4: Simplify right side
   42,986.05x = 961,034,090.50
5. Step 5: Solve for x
   x = 961,034,090.50/42,986.05
6. Step 6: Final answer
   x = 22,356.88