Finding the Fourth Proportional to 268,615.61, 402,973.25 and 88,713.50

Step by Step Solution

1. Step 1: Write the proportion equation
   268,615.61 : 402,973.25 = 88,713.50 : x
2. Step 2: Convert to fraction form
   268,615.61/402,973.25 = 88,713.50/x
3. Step 3: Cross multiply
   268,615.61x = 402,973.25 × 88,713.50
4. Step 4: Simplify right side
   268,615.61x = 35,749,167,222.17
5. Step 5: Solve for x
   x = 35,749,167,222.17/268,615.61
6. Step 6: Final answer
   x = 133,086.71