Finding the Fourth Proportional to 136,154.46, 204,231.78 and 42,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,154.46 : 204,231.78 = 42,667.50 : x
2. Step 2: Convert to fraction form
   136,154.46/204,231.78 = 42,667.50/x
3. Step 3: Cross multiply
   136,154.46x = 204,231.78 × 42,667.50
4. Step 4: Simplify right side
   136,154.46x = 8,714,059,473.15
5. Step 5: Solve for x
   x = 8,714,059,473.15/136,154.46
6. Step 6: Final answer
   x = 64,001.28