Finding the Fourth Proportional to 57,980.56, 80,002.20 and 55,027.84

Step by Step Solution

1. Step 1: Write the proportion equation
   57,980.56 : 80,002.20 = 55,027.84 : x
2. Step 2: Convert to fraction form
   57,980.56/80,002.20 = 55,027.84/x
3. Step 3: Cross multiply
   57,980.56x = 80,002.20 × 55,027.84
4. Step 4: Simplify right side
   57,980.56x = 4,402,348,261.25
5. Step 5: Solve for x
   x = 4,402,348,261.25/57,980.56
6. Step 6: Final answer
   x = 75,928.01