Finding the Fourth Proportional to 149,490.72, 206,295.84 and 82,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   149,490.72 : 206,295.84 = 82,422.72 : x
2. Step 2: Convert to fraction form
   149,490.72/206,295.84 = 82,422.72/x
3. Step 3: Cross multiply
   149,490.72x = 206,295.84 × 82,422.72
4. Step 4: Simplify right side
   149,490.72x = 17,003,464,257.48
5. Step 5: Solve for x
   x = 17,003,464,257.48/149,490.72
6. Step 6: Final answer
   x = 113,742.61