Finding the Fourth Proportional to 112,131.15, 168,196.73 and 76,964.19

Step by Step Solution

1. Step 1: Write the proportion equation
   112,131.15 : 168,196.73 = 76,964.19 : x
2. Step 2: Convert to fraction form
   112,131.15/168,196.73 = 76,964.19/x
3. Step 3: Cross multiply
   112,131.15x = 168,196.73 × 76,964.19
4. Step 4: Simplify right side
   112,131.15x = 12,945,125,085.10
5. Step 5: Solve for x
   x = 12,945,125,085.10/112,131.15
6. Step 6: Final answer
   x = 115,446.29