Finding the Fourth Proportional to 140,761.72, 194,250.90 and 77,100.76

Step by Step Solution

1. Step 1: Write the proportion equation
   140,761.72 : 194,250.90 = 77,100.76 : x
2. Step 2: Convert to fraction form
   140,761.72/194,250.90 = 77,100.76/x
3. Step 3: Cross multiply
   140,761.72x = 194,250.90 × 77,100.76
4. Step 4: Simplify right side
   140,761.72x = 14,976,892,020.68
5. Step 5: Solve for x
   x = 14,976,892,020.68/140,761.72
6. Step 6: Final answer
   x = 106,398.90