Finding the Fourth Proportional to 76,168.97, 105,111.88 and 42,176.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,168.97 : 105,111.88 = 42,176.72 : x
2. Step 2: Convert to fraction form
   76,168.97/105,111.88 = 42,176.72/x
3. Step 3: Cross multiply
   76,168.97x = 105,111.88 × 42,176.72
4. Step 4: Simplify right side
   76,168.97x = 4,433,274,331.43
5. Step 5: Solve for x
   x = 4,433,274,331.43/76,168.97
6. Step 6: Final answer
   x = 58,203.15