Finding the Fourth Proportional to 76,112.35, 105,034.89 and 42,578.35

Step by Step Solution

1. Step 1: Write the proportion equation
   76,112.35 : 105,034.89 = 42,578.35 : x
2. Step 2: Convert to fraction form
   76,112.35/105,034.89 = 42,578.35/x
3. Step 3: Cross multiply
   76,112.35x = 105,034.89 × 42,578.35
4. Step 4: Simplify right side
   76,112.35x = 4,472,212,308.63
5. Step 5: Solve for x
   x = 4,472,212,308.63/76,112.35
6. Step 6: Final answer
   x = 58,758.04