Finding the Fourth Proportional to 268,411.20, 402,667.60 and 88,506.96

Step by Step Solution

1. Step 1: Write the proportion equation
   268,411.20 : 402,667.60 = 88,506.96 : x
2. Step 2: Convert to fraction form
   268,411.20/402,667.60 = 88,506.96/x
3. Step 3: Cross multiply
   268,411.20x = 402,667.60 × 88,506.96
4. Step 4: Simplify right side
   268,411.20x = 35,638,885,166.50
5. Step 5: Solve for x
   x = 35,638,885,166.50/268,411.20
6. Step 6: Final answer
   x = 132,777.19