Finding the Fourth Proportional to 131,911, 182,048.70 and 72,306.52

Step by Step Solution

1. Step 1: Write the proportion equation
   131,911 : 182,048.70 = 72,306.52 : x
2. Step 2: Convert to fraction form
   131,911/182,048.70 = 72,306.52/x
3. Step 3: Cross multiply
   131,911x = 182,048.70 × 72,306.52
4. Step 4: Simplify right side
   131,911x = 13,163,307,967.52
5. Step 5: Solve for x
   x = 13,163,307,967.52/131,911
6. Step 6: Final answer
   x = 99,789.31