Finding the Fourth Proportional to 134,498.72, 185,599.68 and 80,786

Step by Step Solution

1. Step 1: Write the proportion equation
   134,498.72 : 185,599.68 = 80,786 : x
2. Step 2: Convert to fraction form
   134,498.72/185,599.68 = 80,786/x
3. Step 3: Cross multiply
   134,498.72x = 185,599.68 × 80,786
4. Step 4: Simplify right side
   134,498.72x = 14,993,855,748.48
5. Step 5: Solve for x
   x = 14,993,855,748.48/134,498.72
6. Step 6: Final answer
   x = 111,479.54