Finding the Fourth Proportional to 149,596.67, 206,443.89 and 81,615.06

Step by Step Solution

1. Step 1: Write the proportion equation
   149,596.67 : 206,443.89 = 81,615.06 : x
2. Step 2: Convert to fraction form
   149,596.67/206,443.89 = 81,615.06/x
3. Step 3: Cross multiply
   149,596.67x = 206,443.89 × 81,615.06
4. Step 4: Simplify right side
   149,596.67x = 16,848,930,468.98
5. Step 5: Solve for x
   x = 16,848,930,468.98/149,596.67
6. Step 6: Final answer
   x = 112,629.05