Finding the Fourth Proportional to 76,429.50, 105,472.71 and 42,895.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,429.50 : 105,472.71 = 42,895.50 : x
2. Step 2: Convert to fraction form
   76,429.50/105,472.71 = 42,895.50/x
3. Step 3: Cross multiply
   76,429.50x = 105,472.71 × 42,895.50
4. Step 4: Simplify right side
   76,429.50x = 4,524,304,631.81
5. Step 5: Solve for x
   x = 4,524,304,631.81/76,429.50
6. Step 6: Final answer
   x = 59,195.79