Finding the Fourth Proportional to 123,780.24, 185,664.15 and 67,729.86

Step by Step Solution

1. Step 1: Write the proportion equation
   123,780.24 : 185,664.15 = 67,729.86 : x
2. Step 2: Convert to fraction form
   123,780.24/185,664.15 = 67,729.86/x
3. Step 3: Cross multiply
   123,780.24x = 185,664.15 × 67,729.86
4. Step 4: Simplify right side
   123,780.24x = 12,575,006,886.52
5. Step 5: Solve for x
   x = 12,575,006,886.52/123,780.24
6. Step 6: Final answer
   x = 101,591.39