Finding the Fourth Proportional to 109,401.84, 164,165.01 and 87,355.31

Step by Step Solution

1. Step 1: Write the proportion equation
   109,401.84 : 164,165.01 = 87,355.31 : x
2. Step 2: Convert to fraction form
   109,401.84/164,165.01 = 87,355.31/x
3. Step 3: Cross multiply
   109,401.84x = 164,165.01 × 87,355.31
4. Step 4: Simplify right side
   109,401.84x = 14,340,685,339.70
5. Step 5: Solve for x
   x = 14,340,685,339.70/109,401.84
6. Step 6: Final answer
   x = 131,082.67