Finding the Fourth Proportional to 76,570.38, 105,672.87 and 42,584.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,570.38 : 105,672.87 = 42,584.94 : x
2. Step 2: Convert to fraction form
   76,570.38/105,672.87 = 42,584.94/x
3. Step 3: Cross multiply
   76,570.38x = 105,672.87 × 42,584.94
4. Step 4: Simplify right side
   76,570.38x = 4,500,072,828.58
5. Step 5: Solve for x
   x = 4,500,072,828.58/76,570.38
6. Step 6: Final answer
   x = 58,770.41