Finding the Fourth Proportional to 132,040, 182,215.20 and 72,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   132,040 : 182,215.20 = 72,422.72 : x
2. Step 2: Convert to fraction form
   132,040/182,215.20 = 72,422.72/x
3. Step 3: Cross multiply
   132,040x = 182,215.20 × 72,422.72
4. Step 4: Simplify right side
   132,040x = 13,196,520,409.34
5. Step 5: Solve for x
   x = 13,196,520,409.34/132,040
6. Step 6: Final answer
   x = 99,943.35