Finding the Fourth Proportional to 112,578.86, 168,853.71 and 42,449.06

Step by Step Solution

1. Step 1: Write the proportion equation
   112,578.86 : 168,853.71 = 42,449.06 : x
2. Step 2: Convert to fraction form
   112,578.86/168,853.71 = 42,449.06/x
3. Step 3: Cross multiply
   112,578.86x = 168,853.71 × 42,449.06
4. Step 4: Simplify right side
   112,578.86x = 7,167,681,848.33
5. Step 5: Solve for x
   x = 7,167,681,848.33/112,578.86
6. Step 6: Final answer
   x = 63,668.10