Finding the Fourth Proportional to 140,124.78, 193,372.20 and 89,823.78

Step by Step Solution

1. Step 1: Write the proportion equation
   140,124.78 : 193,372.20 = 89,823.78 : x
2. Step 2: Convert to fraction form
   140,124.78/193,372.20 = 89,823.78/x
3. Step 3: Cross multiply
   140,124.78x = 193,372.20 × 89,823.78
4. Step 4: Simplify right side
   140,124.78x = 17,369,421,950.92
5. Step 5: Solve for x
   x = 17,369,421,950.92/140,124.78
6. Step 6: Final answer
   x = 123,956.82