Finding the Fourth Proportional to 56,404.25, 77,796.47 and 40,505.03

Step by Step Solution

1. Step 1: Write the proportion equation
   56,404.25 : 77,796.47 = 40,505.03 : x
2. Step 2: Convert to fraction form
   56,404.25/77,796.47 = 40,505.03/x
3. Step 3: Cross multiply
   56,404.25x = 77,796.47 × 40,505.03
4. Step 4: Simplify right side
   56,404.25x = 3,151,147,759.74
5. Step 5: Solve for x
   x = 3,151,147,759.74/56,404.25
6. Step 6: Final answer
   x = 55,867.21