Finding the Fourth Proportional to 231,234.32, 319,139.88 and 140,618.72

Step by Step Solution

1. Step 1: Write the proportion equation
   231,234.32 : 319,139.88 = 140,618.72 : x
2. Step 2: Convert to fraction form
   231,234.32/319,139.88 = 140,618.72/x
3. Step 3: Cross multiply
   231,234.32x = 319,139.88 × 140,618.72
4. Step 4: Simplify right side
   231,234.32x = 44,877,041,426.55
5. Step 5: Solve for x
   x = 44,877,041,426.55/231,234.32
6. Step 6: Final answer
   x = 194,076.04