Finding the Fourth Proportional to 148,747.76, 205,271.78 and 81,679.76

Step by Step Solution

1. Step 1: Write the proportion equation
   148,747.76 : 205,271.78 = 81,679.76 : x
2. Step 2: Convert to fraction form
   148,747.76/205,271.78 = 81,679.76/x
3. Step 3: Cross multiply
   148,747.76x = 205,271.78 × 81,679.76
4. Step 4: Simplify right side
   148,747.76x = 16,766,548,290.42
5. Step 5: Solve for x
   x = 16,766,548,290.42/148,747.76
6. Step 6: Final answer
   x = 112,717.99