Finding the Fourth Proportional to 140,980.96, 211,404.48 and 81,834.76

Step by Step Solution

1. Step 1: Write the proportion equation
   140,980.96 : 211,404.48 = 81,834.76 : x
2. Step 2: Convert to fraction form
   140,980.96/211,404.48 = 81,834.76/x
3. Step 3: Cross multiply
   140,980.96x = 211,404.48 × 81,834.76
4. Step 4: Simplify right side
   140,980.96x = 17,300,234,883.72
5. Step 5: Solve for x
   x = 17,300,234,883.72/140,980.96
6. Step 6: Final answer
   x = 122,713.27