Finding the Fourth Proportional to 109,359.10, 164,233.05 and 79,810.30

Step by Step Solution

1. Step 1: Write the proportion equation
   109,359.10 : 164,233.05 = 79,810.30 : x
2. Step 2: Convert to fraction form
   109,359.10/164,233.05 = 79,810.30/x
3. Step 3: Cross multiply
   109,359.10x = 164,233.05 × 79,810.30
4. Step 4: Simplify right side
   109,359.10x = 13,107,488,990.42
5. Step 5: Solve for x
   x = 13,107,488,990.42/109,359.10
6. Step 6: Final answer
   x = 119,857.32