Finding the Fourth Proportional to 95,011.74, 142,738.20 and 89,910

Step by Step Solution

1. Step 1: Write the proportion equation
   95,011.74 : 142,738.20 = 89,910 : x
2. Step 2: Convert to fraction form
   95,011.74/142,738.20 = 89,910/x
3. Step 3: Cross multiply
   95,011.74x = 142,738.20 × 89,910
4. Step 4: Simplify right side
   95,011.74x = 12,833,591,562.00
5. Step 5: Solve for x
   x = 12,833,591,562.00/95,011.74
6. Step 6: Final answer
   x = 135,073.75