Finding the Fourth Proportional to 103,962.69, 143,468.60 and 56,216.07

Step by Step Solution

1. Step 1: Write the proportion equation
   103,962.69 : 143,468.60 = 56,216.07 : x
2. Step 2: Convert to fraction form
   103,962.69/143,468.60 = 56,216.07/x
3. Step 3: Cross multiply
   103,962.69x = 143,468.60 × 56,216.07
4. Step 4: Simplify right side
   103,962.69x = 8,065,240,579.32
5. Step 5: Solve for x
   x = 8,065,240,579.32/103,962.69
6. Step 6: Final answer
   x = 77,578.22