Finding the Fourth Proportional to 76,282.72, 105,265.92 and 42,290.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,282.72 : 105,265.92 = 42,290.08 : x
2. Step 2: Convert to fraction form
   76,282.72/105,265.92 = 42,290.08/x
3. Step 3: Cross multiply
   76,282.72x = 105,265.92 × 42,290.08
4. Step 4: Simplify right side
   76,282.72x = 4,451,704,178.07
5. Step 5: Solve for x
   x = 4,451,704,178.07/76,282.72
6. Step 6: Final answer
   x = 58,357.96