Finding the Fourth Proportional to 136,735.08, 204,827.89 and 68,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   136,735.08 : 204,827.89 = 68,139.72 : x
2. Step 2: Convert to fraction form
   136,735.08/204,827.89 = 68,139.72/x
3. Step 3: Cross multiply
   136,735.08x = 204,827.89 × 68,139.72
4. Step 4: Simplify right side
   136,735.08x = 13,956,915,072.79
5. Step 5: Solve for x
   x = 13,956,915,072.79/136,735.08
6. Step 6: Final answer
   x = 102,072.67