Finding the Fourth Proportional to 155,978.26, 215,276.50 and 88,014.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,978.26 : 215,276.50 = 88,014.50 : x
2. Step 2: Convert to fraction form
   155,978.26/215,276.50 = 88,014.50/x
3. Step 3: Cross multiply
   155,978.26x = 215,276.50 × 88,014.50
4. Step 4: Simplify right side
   155,978.26x = 18,947,453,509.25
5. Step 5: Solve for x
   x = 18,947,453,509.25/155,978.26
6. Step 6: Final answer
   x = 121,474.96