Finding the Fourth Proportional to 123,929.22, 185,741.55 and 57,279.18

Step by Step Solution

1. Step 1: Write the proportion equation
   123,929.22 : 185,741.55 = 57,279.18 : x
2. Step 2: Convert to fraction form
   123,929.22/185,741.55 = 57,279.18/x
3. Step 3: Cross multiply
   123,929.22x = 185,741.55 × 57,279.18
4. Step 4: Simplify right side
   123,929.22x = 10,639,123,675.93
5. Step 5: Solve for x
   x = 10,639,123,675.93/123,929.22
6. Step 6: Final answer
   x = 85,848.39