Finding the Fourth Proportional to 42,046.79, 63,068.34 and 10,456.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,046.79 : 63,068.34 = 10,456.17 : x
2. Step 2: Convert to fraction form
   42,046.79/63,068.34 = 10,456.17/x
3. Step 3: Cross multiply
   42,046.79x = 63,068.34 × 10,456.17
4. Step 4: Simplify right side
   42,046.79x = 659,453,284.66
5. Step 5: Solve for x
   x = 659,453,284.66/42,046.79
6. Step 6: Final answer
   x = 15,683.80