Finding the Fourth Proportional to 200,911.59, 277,152.30 and 153,081.90

Step by Step Solution

1. Step 1: Write the proportion equation
   200,911.59 : 277,152.30 = 153,081.90 : x
2. Step 2: Convert to fraction form
   200,911.59/277,152.30 = 153,081.90/x
3. Step 3: Cross multiply
   200,911.59x = 277,152.30 × 153,081.90
4. Step 4: Simplify right side
   200,911.59x = 42,427,000,673.37
5. Step 5: Solve for x
   x = 42,427,000,673.37/200,911.59
6. Step 6: Final answer
   x = 211,172.49