Finding the Fourth Proportional to 76,556.88, 105,646.38 and 42,564.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,556.88 : 105,646.38 = 42,564.48 : x
2. Step 2: Convert to fraction form
   76,556.88/105,646.38 = 42,564.48/x
3. Step 3: Cross multiply
   76,556.88x = 105,646.38 × 42,564.48
4. Step 4: Simplify right side
   76,556.88x = 4,496,783,228.58
5. Step 5: Solve for x
   x = 4,496,783,228.58/76,556.88
6. Step 6: Final answer
   x = 58,737.81