Finding the Fourth Proportional to 231,333.20, 319,116.72 and 140,716.88

Step by Step Solution

1. Step 1: Write the proportion equation
   231,333.20 : 319,116.72 = 140,716.88 : x
2. Step 2: Convert to fraction form
   231,333.20/319,116.72 = 140,716.88/x
3. Step 3: Cross multiply
   231,333.20x = 319,116.72 × 140,716.88
4. Step 4: Simplify right side
   231,333.20x = 44,905,109,194.23
5. Step 5: Solve for x
   x = 44,905,109,194.23/231,333.20
6. Step 6: Final answer
   x = 194,114.42