Finding the Fourth Proportional to 140,072.58, 193,299.48 and 76,409.82

Step by Step Solution

1. Step 1: Write the proportion equation
   140,072.58 : 193,299.48 = 76,409.82 : x
2. Step 2: Convert to fraction form
   140,072.58/193,299.48 = 76,409.82/x
3. Step 3: Cross multiply
   140,072.58x = 193,299.48 × 76,409.82
4. Step 4: Simplify right side
   140,072.58x = 14,769,978,472.89
5. Step 5: Solve for x
   x = 14,769,978,472.89/140,072.58
6. Step 6: Final answer
   x = 105,445.18