Finding the Fourth Proportional to 76,168.96, 105,111.89 and 42,176.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,168.96 : 105,111.89 = 42,176.72 : x
2. Step 2: Convert to fraction form
   76,168.96/105,111.89 = 42,176.72/x
3. Step 3: Cross multiply
   76,168.96x = 105,111.89 × 42,176.72
4. Step 4: Simplify right side
   76,168.96x = 4,433,274,753.20
5. Step 5: Solve for x
   x = 4,433,274,753.20/76,168.96
6. Step 6: Final answer
   x = 58,203.17