Finding the Fourth Proportional to 76,943.55, 106,187.43 and 42,958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,943.55 : 106,187.43 = 42,958.72 : x
2. Step 2: Convert to fraction form
   76,943.55/106,187.43 = 42,958.72/x
3. Step 3: Cross multiply
   76,943.55x = 106,187.43 × 42,958.72
4. Step 4: Simplify right side
   76,943.55x = 4,561,676,072.89
5. Step 5: Solve for x
   x = 4,561,676,072.89/76,943.55
6. Step 6: Final answer
   x = 59,286.01