Finding the Fourth Proportional to 83,673.12, 124,771.56 and 72,060.96

Step by Step Solution

1. Step 1: Write the proportion equation
   83,673.12 : 124,771.56 = 72,060.96 : x
2. Step 2: Convert to fraction form
   83,673.12/124,771.56 = 72,060.96/x
3. Step 3: Cross multiply
   83,673.12x = 124,771.56 × 72,060.96
4. Step 4: Simplify right side
   83,673.12x = 8,991,158,394.30
5. Step 5: Solve for x
   x = 8,991,158,394.30/83,673.12
6. Step 6: Final answer
   x = 107,455.76