Finding the Fourth Proportional to 231,498.90, 348,983.48 and 216,067.74

Step by Step Solution

1. Step 1: Write the proportion equation
   231,498.90 : 348,983.48 = 216,067.74 : x
2. Step 2: Convert to fraction form
   231,498.90/348,983.48 = 216,067.74/x
3. Step 3: Cross multiply
   231,498.90x = 348,983.48 × 216,067.74
4. Step 4: Simplify right side
   231,498.90x = 75,404,070,138.22
5. Step 5: Solve for x
   x = 75,404,070,138.22/231,498.90
6. Step 6: Final answer
   x = 325,721.08