Finding the Fourth Proportional to 72,111.12, 108,166.65 and 52,514.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,111.12 : 108,166.65 = 52,514.38 : x
2. Step 2: Convert to fraction form
   72,111.12/108,166.65 = 52,514.38/x
3. Step 3: Cross multiply
   72,111.12x = 108,166.65 × 52,514.38
4. Step 4: Simplify right side
   72,111.12x = 5,680,304,561.43
5. Step 5: Solve for x
   x = 5,680,304,561.43/72,111.12
6. Step 6: Final answer
   x = 78,771.55