Finding the Fourth Proportional to 140,665.82, 210,998.79 and 61,780.73

Step by Step Solution

1. Step 1: Write the proportion equation
   140,665.82 : 210,998.79 = 61,780.73 : x
2. Step 2: Convert to fraction form
   140,665.82/210,998.79 = 61,780.73/x
3. Step 3: Cross multiply
   140,665.82x = 210,998.79 × 61,780.73
4. Step 4: Simplify right side
   140,665.82x = 13,035,658,220.32
5. Step 5: Solve for x
   x = 13,035,658,220.32/140,665.82
6. Step 6: Final answer
   x = 92,671.12