Finding the Fourth Proportional to 42,932.42, 64,399.17 and 13,349.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,932.42 : 64,399.17 = 13,349.60 : x
2. Step 2: Convert to fraction form
   42,932.42/64,399.17 = 13,349.60/x
3. Step 3: Cross multiply
   42,932.42x = 64,399.17 × 13,349.60
4. Step 4: Simplify right side
   42,932.42x = 859,703,159.83
5. Step 5: Solve for x
   x = 859,703,159.83/42,932.42
6. Step 6: Final answer
   x = 20,024.57