Finding the Fourth Proportional to 78,801.12, 108,819.18 and 50,555.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,801.12 : 108,819.18 = 50,555.88 : x
2. Step 2: Convert to fraction form
   78,801.12/108,819.18 = 50,555.88/x
3. Step 3: Cross multiply
   78,801.12x = 108,819.18 × 50,555.88
4. Step 4: Simplify right side
   78,801.12x = 5,501,449,405.78
5. Step 5: Solve for x
   x = 5,501,449,405.78/78,801.12
6. Step 6: Final answer
   x = 69,814.36