Finding the Fourth Proportional to 81,606.88, 112,618.52 and 49,778.74

Step by Step Solution

1. Step 1: Write the proportion equation
   81,606.88 : 112,618.52 = 49,778.74 : x
2. Step 2: Convert to fraction form
   81,606.88/112,618.52 = 49,778.74/x
3. Step 3: Cross multiply
   81,606.88x = 112,618.52 × 49,778.74
4. Step 4: Simplify right side
   81,606.88x = 5,606,008,026.26
5. Step 5: Solve for x
   x = 5,606,008,026.26/81,606.88
6. Step 6: Final answer
   x = 68,695.29