Finding the Fourth Proportional to 123,296.42, 169,994.15 and 100,612.37

Step by Step Solution

1. Step 1: Write the proportion equation
   123,296.42 : 169,994.15 = 100,612.37 : x
2. Step 2: Convert to fraction form
   123,296.42/169,994.15 = 100,612.37/x
3. Step 3: Cross multiply
   123,296.42x = 169,994.15 × 100,612.37
4. Step 4: Simplify right side
   123,296.42x = 17,103,514,317.64
5. Step 5: Solve for x
   x = 17,103,514,317.64/123,296.42
6. Step 6: Final answer
   x = 138,718.66