Finding the Fourth Proportional to 140,570.73, 193,990.41 and 76,909.89

Step by Step Solution

1. Step 1: Write the proportion equation
   140,570.73 : 193,990.41 = 76,909.89 : x
2. Step 2: Convert to fraction form
   140,570.73/193,990.41 = 76,909.89/x
3. Step 3: Cross multiply
   140,570.73x = 193,990.41 × 76,909.89
4. Step 4: Simplify right side
   140,570.73x = 14,919,781,094.15
5. Step 5: Solve for x
   x = 14,919,781,094.15/140,570.73
6. Step 6: Final answer
   x = 106,137.18