Finding the Fourth Proportional to 112,976.56, 169,493.09 and 79,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,976.56 : 169,493.09 = 79,761.50 : x
2. Step 2: Convert to fraction form
   112,976.56/169,493.09 = 79,761.50/x
3. Step 3: Cross multiply
   112,976.56x = 169,493.09 × 79,761.50
4. Step 4: Simplify right side
   112,976.56x = 13,519,023,098.04
5. Step 5: Solve for x
   x = 13,519,023,098.04/112,976.56
6. Step 6: Final answer
   x = 119,662.19