Finding the Fourth Proportional to 76,559.48, 105,656.85 and 42,575.57

Step by Step Solution

1. Step 1: Write the proportion equation
   76,559.48 : 105,656.85 = 42,575.57 : x
2. Step 2: Convert to fraction form
   76,559.48/105,656.85 = 42,575.57/x
3. Step 3: Cross multiply
   76,559.48x = 105,656.85 × 42,575.57
4. Step 4: Simplify right side
   76,559.48x = 4,498,400,084.87
5. Step 5: Solve for x
   x = 4,498,400,084.87/76,559.48
6. Step 6: Final answer
   x = 58,756.93