Finding the Fourth Proportional to 231,048.45, 318,713.85 and 139,103.82

Step by Step Solution

1. Step 1: Write the proportion equation
   231,048.45 : 318,713.85 = 139,103.82 : x
2. Step 2: Convert to fraction form
   231,048.45/318,713.85 = 139,103.82/x
3. Step 3: Cross multiply
   231,048.45x = 318,713.85 × 139,103.82
4. Step 4: Simplify right side
   231,048.45x = 44,334,314,021.91
5. Step 5: Solve for x
   x = 44,334,314,021.91/231,048.45
6. Step 6: Final answer
   x = 191,883.19