Finding the Fourth Proportional to 112,667.72, 168,664.86 and 68,159.96

Step by Step Solution

1. Step 1: Write the proportion equation
   112,667.72 : 168,664.86 = 68,159.96 : x
2. Step 2: Convert to fraction form
   112,667.72/168,664.86 = 68,159.96/x
3. Step 3: Cross multiply
   112,667.72x = 168,664.86 × 68,159.96
4. Step 4: Simplify right side
   112,667.72x = 11,496,190,111.01
5. Step 5: Solve for x
   x = 11,496,190,111.01/112,667.72
6. Step 6: Final answer
   x = 102,036.24