Finding the Fourth Proportional to 55,404.37, 76,974.21 and 54,740.07

Step by Step Solution

1. Step 1: Write the proportion equation
   55,404.37 : 76,974.21 = 54,740.07 : x
2. Step 2: Convert to fraction form
   55,404.37/76,974.21 = 54,740.07/x
3. Step 3: Cross multiply
   55,404.37x = 76,974.21 × 54,740.07
4. Step 4: Simplify right side
   55,404.37x = 4,213,573,303.62
5. Step 5: Solve for x
   x = 4,213,573,303.62/55,404.37
6. Step 6: Final answer
   x = 76,051.28