Finding the Fourth Proportional to 42,693.42, 64,043.20 and 16,398.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,693.42 : 64,043.20 = 16,398.16 : x
2. Step 2: Convert to fraction form
   42,693.42/64,043.20 = 16,398.16/x
3. Step 3: Cross multiply
   42,693.42x = 64,043.20 × 16,398.16
4. Step 4: Simplify right side
   42,693.42x = 1,050,190,640.51
5. Step 5: Solve for x
   x = 1,050,190,640.51/42,693.42
6. Step 6: Final answer
   x = 24,598.42