Finding the Fourth Proportional to 140,142.78, 193,397.58 and 76,482

Step by Step Solution

1. Step 1: Write the proportion equation
   140,142.78 : 193,397.58 = 76,482 : x
2. Step 2: Convert to fraction form
   140,142.78/193,397.58 = 76,482/x
3. Step 3: Cross multiply
   140,142.78x = 193,397.58 × 76,482
4. Step 4: Simplify right side
   140,142.78x = 14,791,433,713.56
5. Step 5: Solve for x
   x = 14,791,433,713.56/140,142.78
6. Step 6: Final answer
   x = 105,545.46