Finding the Fourth Proportional to 140,065.59, 193,291.91 and 76,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,065.59 : 193,291.91 = 76,404.72 : x
2. Step 2: Convert to fraction form
   140,065.59/193,291.91 = 76,404.72/x
3. Step 3: Cross multiply
   140,065.59x = 193,291.91 × 76,404.72
4. Step 4: Simplify right side
   140,065.59x = 14,768,414,261.82
5. Step 5: Solve for x
   x = 14,768,414,261.82/140,065.59
6. Step 6: Final answer
   x = 105,439.27