Finding the Fourth Proportional to 57,150.66, 79,342.98 and 55,439.94

Step by Step Solution

1. Step 1: Write the proportion equation
   57,150.66 : 79,342.98 = 55,439.94 : x
2. Step 2: Convert to fraction form
   57,150.66/79,342.98 = 55,439.94/x
3. Step 3: Cross multiply
   57,150.66x = 79,342.98 × 55,439.94
4. Step 4: Simplify right side
   57,150.66x = 4,398,770,050.62
5. Step 5: Solve for x
   x = 4,398,770,050.62/57,150.66
6. Step 6: Final answer
   x = 76,967.97