Finding the Fourth Proportional to 123,090.58, 169,860.18 and 69,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,090.58 : 169,860.18 = 69,386.50 : x
2. Step 2: Convert to fraction form
   123,090.58/169,860.18 = 69,386.50/x
3. Step 3: Cross multiply
   123,090.58x = 169,860.18 × 69,386.50
4. Step 4: Simplify right side
   123,090.58x = 11,786,003,379.57
5. Step 5: Solve for x
   x = 11,786,003,379.57/123,090.58
6. Step 6: Final answer
   x = 95,750.65