Finding the Fourth Proportional to 76,425.50, 105,476.91 and 42,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,425.50 : 105,476.91 = 42,891.50 : x
2. Step 2: Convert to fraction form
   76,425.50/105,476.91 = 42,891.50/x
3. Step 3: Cross multiply
   76,425.50x = 105,476.91 × 42,891.50
4. Step 4: Simplify right side
   76,425.50x = 4,524,062,885.27
5. Step 5: Solve for x
   x = 4,524,062,885.27/76,425.50
6. Step 6: Final answer
   x = 59,195.73