Finding the Fourth Proportional to 56,766.78, 78,308.42 and 43,314.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,766.78 : 78,308.42 = 43,314.72 : x
2. Step 2: Convert to fraction form
   56,766.78/78,308.42 = 43,314.72/x
3. Step 3: Cross multiply
   56,766.78x = 78,308.42 × 43,314.72
4. Step 4: Simplify right side
   56,766.78x = 3,391,907,285.94
5. Step 5: Solve for x
   x = 3,391,907,285.94/56,766.78
6. Step 6: Final answer
   x = 59,751.62