Finding the Fourth Proportional to 216,165.33, 296,145.12 and 208,081.81

Step by Step Solution

1. Step 1: Write the proportion equation
   216,165.33 : 296,145.12 = 208,081.81 : x
2. Step 2: Convert to fraction form
   216,165.33/296,145.12 = 208,081.81/x
3. Step 3: Cross multiply
   216,165.33x = 296,145.12 × 208,081.81
4. Step 4: Simplify right side
   216,165.33x = 61,622,412,592.27
5. Step 5: Solve for x
   x = 61,622,412,592.27/216,165.33
6. Step 6: Final answer
   x = 285,070.75