Finding the Fourth Proportional to 78,819.64, 108,771.10 and 50,525.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,819.64 : 108,771.10 = 50,525.33 : x
2. Step 2: Convert to fraction form
   78,819.64/108,771.10 = 50,525.33/x
3. Step 3: Cross multiply
   78,819.64x = 108,771.10 × 50,525.33
4. Step 4: Simplify right side
   78,819.64x = 5,495,695,051.79
5. Step 5: Solve for x
   x = 5,495,695,051.79/78,819.64
6. Step 6: Final answer
   x = 69,724.95