Finding the Fourth Proportional to 72,855.48, 109,317.78 and 43,331.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,855.48 : 109,317.78 = 43,331.52 : x
2. Step 2: Convert to fraction form
   72,855.48/109,317.78 = 43,331.52/x
3. Step 3: Cross multiply
   72,855.48x = 109,317.78 × 43,331.52
4. Step 4: Simplify right side
   72,855.48x = 4,736,905,570.43
5. Step 5: Solve for x
   x = 4,736,905,570.43/72,855.48
6. Step 6: Final answer
   x = 65,017.83