Finding the Fourth Proportional to 112,910.77, 155,805.64 and 65,179.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,910.77 : 155,805.64 = 65,179.50 : x
2. Step 2: Convert to fraction form
   112,910.77/155,805.64 = 65,179.50/x
3. Step 3: Cross multiply
   112,910.77x = 155,805.64 × 65,179.50
4. Step 4: Simplify right side
   112,910.77x = 10,155,333,379.51
5. Step 5: Solve for x
   x = 10,155,333,379.51/112,910.77
6. Step 6: Final answer
   x = 89,941.23