Finding the Fourth Proportional to 231,499.76, 319,493.48 and 140,862.32

Step by Step Solution

1. Step 1: Write the proportion equation
   231,499.76 : 319,493.48 = 140,862.32 : x
2. Step 2: Convert to fraction form
   231,499.76/319,493.48 = 140,862.32/x
3. Step 3: Cross multiply
   231,499.76x = 319,493.48 × 140,862.32
4. Step 4: Simplify right side
   231,499.76x = 45,004,592,817.67
5. Step 5: Solve for x
   x = 45,004,592,817.67/231,499.76
6. Step 6: Final answer
   x = 194,404.49