Finding the Fourth Proportional to 104,656.89, 144,806.82 and 91,256.07

Step by Step Solution

1. Step 1: Write the proportion equation
   104,656.89 : 144,806.82 = 91,256.07 : x
2. Step 2: Convert to fraction form
   104,656.89/144,806.82 = 91,256.07/x
3. Step 3: Cross multiply
   104,656.89x = 144,806.82 × 91,256.07
4. Step 4: Simplify right side
   104,656.89x = 13,214,501,302.40
5. Step 5: Solve for x
   x = 13,214,501,302.40/104,656.89
6. Step 6: Final answer
   x = 126,264.99