Finding the Fourth Proportional to 155,173.50, 214,139.43 and 88,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,173.50 : 214,139.43 = 88,105.50 : x
2. Step 2: Convert to fraction form
   155,173.50/214,139.43 = 88,105.50/x
3. Step 3: Cross multiply
   155,173.50x = 214,139.43 × 88,105.50
4. Step 4: Simplify right side
   155,173.50x = 18,866,861,549.87
5. Step 5: Solve for x
   x = 18,866,861,549.87/155,173.50
6. Step 6: Final answer
   x = 121,585.59