Finding the Fourth Proportional to 140,340.56, 193,755.79 and 91,328.88

Step by Step Solution

1. Step 1: Write the proportion equation
   140,340.56 : 193,755.79 = 91,328.88 : x
2. Step 2: Convert to fraction form
   140,340.56/193,755.79 = 91,328.88/x
3. Step 3: Cross multiply
   140,340.56x = 193,755.79 × 91,328.88
4. Step 4: Simplify right side
   140,340.56x = 17,695,499,229.93
5. Step 5: Solve for x
   x = 17,695,499,229.93/140,340.56
6. Step 6: Final answer
   x = 126,089.70