Finding the Fourth Proportional to 155,002.57, 213,896.25 and 86,096.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,002.57 : 213,896.25 = 86,096.50 : x
2. Step 2: Convert to fraction form
   155,002.57/213,896.25 = 86,096.50/x
3. Step 3: Cross multiply
   155,002.57x = 213,896.25 × 86,096.50
4. Step 4: Simplify right side
   155,002.57x = 18,415,717,418.64
5. Step 5: Solve for x
   x = 18,415,717,418.64/155,002.57
6. Step 6: Final answer
   x = 118,809.11