Finding the Fourth Proportional to 56,858.76, 78,431.22 and 41,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,858.76 : 78,431.22 = 41,724.72 : x
2. Step 2: Convert to fraction form
   56,858.76/78,431.22 = 41,724.72/x
3. Step 3: Cross multiply
   56,858.76x = 78,431.22 × 41,724.72
4. Step 4: Simplify right side
   56,858.76x = 3,272,520,693.76
5. Step 5: Solve for x
   x = 3,272,520,693.76/56,858.76
6. Step 6: Final answer
   x = 57,555.26