Finding the Fourth Proportional to 149,916.16, 206,878.72 and 82,849.28

Step by Step Solution

1. Step 1: Write the proportion equation
   149,916.16 : 206,878.72 = 82,849.28 : x
2. Step 2: Convert to fraction form
   149,916.16/206,878.72 = 82,849.28/x
3. Step 3: Cross multiply
   149,916.16x = 206,878.72 × 82,849.28
4. Step 4: Simplify right side
   149,916.16x = 17,139,752,999.32
5. Step 5: Solve for x
   x = 17,139,752,999.32/149,916.16
6. Step 6: Final answer
   x = 114,328.92