Finding the Fourth Proportional to 123,856.54, 185,726.21 and 47,990.59

Step by Step Solution

1. Step 1: Write the proportion equation
   123,856.54 : 185,726.21 = 47,990.59 : x
2. Step 2: Convert to fraction form
   123,856.54/185,726.21 = 47,990.59/x
3. Step 3: Cross multiply
   123,856.54x = 185,726.21 × 47,990.59
4. Step 4: Simplify right side
   123,856.54x = 8,913,109,227.78
5. Step 5: Solve for x
   x = 8,913,109,227.78/123,856.54
6. Step 6: Final answer
   x = 71,963.17