Finding the Fourth Proportional to 123,499.51, 170,335.29 and 106,301.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,499.51 : 170,335.29 = 106,301.15 : x
2. Step 2: Convert to fraction form
   123,499.51/170,335.29 = 106,301.15/x
3. Step 3: Cross multiply
   123,499.51x = 170,335.29 × 106,301.15
4. Step 4: Simplify right side
   123,499.51x = 18,106,837,212.58
5. Step 5: Solve for x
   x = 18,106,837,212.58/123,499.51
6. Step 6: Final answer
   x = 146,614.65