Finding the Fourth Proportional to 42,696.59, 64,053.25 and 16,399.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,696.59 : 64,053.25 = 16,399.31 : x
2. Step 2: Convert to fraction form
   42,696.59/64,053.25 = 16,399.31/x
3. Step 3: Cross multiply
   42,696.59x = 64,053.25 × 16,399.31
4. Step 4: Simplify right side
   42,696.59x = 1,050,428,741.99
5. Step 5: Solve for x
   x = 1,050,428,741.99/42,696.59
6. Step 6: Final answer
   x = 24,602.17