Finding the Fourth Proportional to 265,910.67, 398,869.49 and 88,417.69

Step by Step Solution

1. Step 1: Write the proportion equation
   265,910.67 : 398,869.49 = 88,417.69 : x
2. Step 2: Convert to fraction form
   265,910.67/398,869.49 = 88,417.69/x
3. Step 3: Cross multiply
   265,910.67x = 398,869.49 × 88,417.69
4. Step 4: Simplify right side
   265,910.67x = 35,267,118,141.15
5. Step 5: Solve for x
   x = 35,267,118,141.15/265,910.67
6. Step 6: Final answer
   x = 132,627.69