Finding the Fourth Proportional to 56,550.33, 78,004.71 and 40,656.09

Step by Step Solution

1. Step 1: Write the proportion equation
   56,550.33 : 78,004.71 = 40,656.09 : x
2. Step 2: Convert to fraction form
   56,550.33/78,004.71 = 40,656.09/x
3. Step 3: Cross multiply
   56,550.33x = 78,004.71 × 40,656.09
4. Step 4: Simplify right side
   56,550.33x = 3,171,366,510.18
5. Step 5: Solve for x
   x = 3,171,366,510.18/56,550.33
6. Step 6: Final answer
   x = 56,080.42