Finding the Fourth Proportional to 123,498.91, 170,334.46 and 106,300.55

Step by Step Solution

1. Step 1: Write the proportion equation
   123,498.91 : 170,334.46 = 106,300.55 : x
2. Step 2: Convert to fraction form
   123,498.91/170,334.46 = 106,300.55/x
3. Step 3: Cross multiply
   123,498.91x = 170,334.46 × 106,300.55
4. Step 4: Simplify right side
   123,498.91x = 18,106,646,701.91
5. Step 5: Solve for x
   x = 18,106,646,701.91/123,498.91
6. Step 6: Final answer
   x = 146,613.82