Finding the Fourth Proportional to 108,561.22, 149,906.25 and 81,656.86

Step by Step Solution

1. Step 1: Write the proportion equation
   108,561.22 : 149,906.25 = 81,656.86 : x
2. Step 2: Convert to fraction form
   108,561.22/149,906.25 = 81,656.86/x
3. Step 3: Cross multiply
   108,561.22x = 149,906.25 × 81,656.86
4. Step 4: Simplify right side
   108,561.22x = 12,240,873,669.38
5. Step 5: Solve for x
   x = 12,240,873,669.38/108,561.22
6. Step 6: Final answer
   x = 112,755.49