Finding the Fourth Proportional to 123,924.42, 171,026.04 and 76,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,924.42 : 171,026.04 = 76,189.50 : x
2. Step 2: Convert to fraction form
   123,924.42/171,026.04 = 76,189.50/x
3. Step 3: Cross multiply
   123,924.42x = 171,026.04 × 76,189.50
4. Step 4: Simplify right side
   123,924.42x = 13,030,388,474.58
5. Step 5: Solve for x
   x = 13,030,388,474.58/123,924.42
6. Step 6: Final answer
   x = 105,147.87