Finding the Fourth Proportional to 72,490.55, 108,290.22 and 52,327.77

Step by Step Solution

1. Step 1: Write the proportion equation
   72,490.55 : 108,290.22 = 52,327.77 : x
2. Step 2: Convert to fraction form
   72,490.55/108,290.22 = 52,327.77/x
3. Step 3: Cross multiply
   72,490.55x = 108,290.22 × 52,327.77
4. Step 4: Simplify right side
   72,490.55x = 5,666,585,732.22
5. Step 5: Solve for x
   x = 5,666,585,732.22/72,490.55
6. Step 6: Final answer
   x = 78,170.00