Finding the Fourth Proportional to 80,156.67, 110,666.61 and 51,487.89

Step by Step Solution

1. Step 1: Write the proportion equation
   80,156.67 : 110,666.61 = 51,487.89 : x
2. Step 2: Convert to fraction form
   80,156.67/110,666.61 = 51,487.89/x
3. Step 3: Cross multiply
   80,156.67x = 110,666.61 × 51,487.89
4. Step 4: Simplify right side
   80,156.67x = 5,697,990,242.35
5. Step 5: Solve for x
   x = 5,697,990,242.35/80,156.67
6. Step 6: Final answer
   x = 71,085.67