Finding the Fourth Proportional to 103,963.07, 143,468.61 and 56,216.41

Step by Step Solution

1. Step 1: Write the proportion equation
   103,963.07 : 143,468.61 = 56,216.41 : x
2. Step 2: Convert to fraction form
   103,963.07/143,468.61 = 56,216.41/x
3. Step 3: Cross multiply
   103,963.07x = 143,468.61 × 56,216.41
4. Step 4: Simplify right side
   103,963.07x = 8,065,290,201.89
5. Step 5: Solve for x
   x = 8,065,290,201.89/103,963.07
6. Step 6: Final answer
   x = 77,578.42