Finding the Fourth Proportional to 200,917.12, 277,289.28 and 111,498.88

Step by Step Solution

1. Step 1: Write the proportion equation
   200,917.12 : 277,289.28 = 111,498.88 : x
2. Step 2: Convert to fraction form
   200,917.12/277,289.28 = 111,498.88/x
3. Step 3: Cross multiply
   200,917.12x = 277,289.28 × 111,498.88
4. Step 4: Simplify right side
   200,917.12x = 30,917,444,156.01
5. Step 5: Solve for x
   x = 30,917,444,156.01/200,917.12
6. Step 6: Final answer
   x = 153,881.58