Finding the Fourth Proportional to 123,498.51, 170,333.91 and 106,300.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,498.51 : 170,333.91 = 106,300.15 : x
2. Step 2: Convert to fraction form
   123,498.51/170,333.91 = 106,300.15/x
3. Step 3: Cross multiply
   123,498.51x = 170,333.91 × 106,300.15
4. Step 4: Simplify right side
   123,498.51x = 18,106,520,215.91
5. Step 5: Solve for x
   x = 18,106,520,215.91/123,498.51
6. Step 6: Final answer
   x = 146,613.27