Finding the Fourth Proportional to 76,570.14, 105,666.89 and 42,578.26

Step by Step Solution

1. Step 1: Write the proportion equation
   76,570.14 : 105,666.89 = 42,578.26 : x
2. Step 2: Convert to fraction form
   76,570.14/105,666.89 = 42,578.26/x
3. Step 3: Cross multiply
   76,570.14x = 105,666.89 × 42,578.26
4. Step 4: Simplify right side
   76,570.14x = 4,499,112,315.81
5. Step 5: Solve for x
   x = 4,499,112,315.81/76,570.14
6. Step 6: Final answer
   x = 58,758.05