Finding the Fourth Proportional to 108,645.30, 162,579.15 and 99,314.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,645.30 : 162,579.15 = 99,314.10 : x
2. Step 2: Convert to fraction form
   108,645.30/162,579.15 = 99,314.10/x
3. Step 3: Cross multiply
   108,645.30x = 162,579.15 × 99,314.10
4. Step 4: Simplify right side
   108,645.30x = 16,146,401,961.02
5. Step 5: Solve for x
   x = 16,146,401,961.02/108,645.30
6. Step 6: Final answer
   x = 148,615.74